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Audio Coding

WAVENET BASED LOW RATE SPEECH CODING

Quan Wang

Traditional parametric coding of speech facilitates low rate but provides poor reconstruction quality because of the inadequacy of the model used. We describe how a WaveNet generative speech model can be used to generate high quality speech from the bit stream of a standard parametric coder operating at 2.4 kb/s. We compare this parametric coder with a waveform coder based on the same generative model and show that approximating the signal waveform incurs a large rate penalty.

Paper Details

Authors:
Quan Wang
W. Bastiaan Kleijn, Felicia S. C. Lim, Alejandro Luebs, Jan Skoglund, Florian Stimberg, Quan Wang, Thomas C. Walters
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4 May 2018 - 2:28pm
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[1] W. Bastiaan Kleijn, Felicia S. C. Lim, Alejandro Luebs, Jan Skoglund, Florian Stimberg, Quan Wang, Thomas C. Walters, "WAVENET BASED LOW RATE SPEECH CODING", IEEE SigPort, 2018. [Online]. Available: http://sigport.org/3201. Accessed: Apr. 25, 2019.
@article{3201-18,
url = {http://sigport.org/3201},
author = {W. Bastiaan Kleijn; Felicia S. C. Lim; Alejandro Luebs; Jan Skoglund; Florian Stimberg; Quan Wang; Thomas C. Walters },
publisher = {IEEE SigPort},
title = {WAVENET BASED LOW RATE SPEECH CODING},
year = {2018} }
TY - EJOUR
T1 - WAVENET BASED LOW RATE SPEECH CODING
AU - W. Bastiaan Kleijn; Felicia S. C. Lim; Alejandro Luebs; Jan Skoglund; Florian Stimberg; Quan Wang; Thomas C. Walters
PY - 2018
PB - IEEE SigPort
UR - http://sigport.org/3201
ER -
W. Bastiaan Kleijn, Felicia S. C. Lim, Alejandro Luebs, Jan Skoglund, Florian Stimberg, Quan Wang, Thomas C. Walters. (2018). WAVENET BASED LOW RATE SPEECH CODING. IEEE SigPort. http://sigport.org/3201
W. Bastiaan Kleijn, Felicia S. C. Lim, Alejandro Luebs, Jan Skoglund, Florian Stimberg, Quan Wang, Thomas C. Walters, 2018. WAVENET BASED LOW RATE SPEECH CODING. Available at: http://sigport.org/3201.
W. Bastiaan Kleijn, Felicia S. C. Lim, Alejandro Luebs, Jan Skoglund, Florian Stimberg, Quan Wang, Thomas C. Walters. (2018). "WAVENET BASED LOW RATE SPEECH CODING." Web.
1. W. Bastiaan Kleijn, Felicia S. C. Lim, Alejandro Luebs, Jan Skoglund, Florian Stimberg, Quan Wang, Thomas C. Walters. WAVENET BASED LOW RATE SPEECH CODING [Internet]. IEEE SigPort; 2018. Available from : http://sigport.org/3201

ADAPTIVE CODING OF NON-NEGATIVE FACTORIZATION PARAMETERS WITH APPLICATION TO INFORMED SOURCE SEPARATION

Christian Rohlfing

Informed source separation (ISS) uses source separation for extracting audio objects out of their downmix given some pre-computed parameters. In recent years, non-negative tensor factorization (NTF) has proven to be a good choice for compressing audio objects at an encoding stage. At the decoding stage, these parameters are used to separate the downmix with Wiener-filtering. The quantized NTF parameters have to be encoded to a bitstream prior to transmission.

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Authors:
Christian Rohlfing
Max Bläser, Christian Rohlfing, Yingbo Gao, Mathias Wien
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22 April 2018 - 1:25pm
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[1] Max Bläser, Christian Rohlfing, Yingbo Gao, Mathias Wien, "ADAPTIVE CODING OF NON-NEGATIVE FACTORIZATION PARAMETERS WITH APPLICATION TO INFORMED SOURCE SEPARATION", IEEE SigPort, 2018. [Online]. Available: http://sigport.org/3135. Accessed: Apr. 25, 2019.
@article{3135-18,
url = {http://sigport.org/3135},
author = {Max Bläser; Christian Rohlfing; Yingbo Gao; Mathias Wien },
publisher = {IEEE SigPort},
title = {ADAPTIVE CODING OF NON-NEGATIVE FACTORIZATION PARAMETERS WITH APPLICATION TO INFORMED SOURCE SEPARATION},
year = {2018} }
TY - EJOUR
T1 - ADAPTIVE CODING OF NON-NEGATIVE FACTORIZATION PARAMETERS WITH APPLICATION TO INFORMED SOURCE SEPARATION
AU - Max Bläser; Christian Rohlfing; Yingbo Gao; Mathias Wien
PY - 2018
PB - IEEE SigPort
UR - http://sigport.org/3135
ER -
Max Bläser, Christian Rohlfing, Yingbo Gao, Mathias Wien. (2018). ADAPTIVE CODING OF NON-NEGATIVE FACTORIZATION PARAMETERS WITH APPLICATION TO INFORMED SOURCE SEPARATION. IEEE SigPort. http://sigport.org/3135
Max Bläser, Christian Rohlfing, Yingbo Gao, Mathias Wien, 2018. ADAPTIVE CODING OF NON-NEGATIVE FACTORIZATION PARAMETERS WITH APPLICATION TO INFORMED SOURCE SEPARATION. Available at: http://sigport.org/3135.
Max Bläser, Christian Rohlfing, Yingbo Gao, Mathias Wien. (2018). "ADAPTIVE CODING OF NON-NEGATIVE FACTORIZATION PARAMETERS WITH APPLICATION TO INFORMED SOURCE SEPARATION." Web.
1. Max Bläser, Christian Rohlfing, Yingbo Gao, Mathias Wien. ADAPTIVE CODING OF NON-NEGATIVE FACTORIZATION PARAMETERS WITH APPLICATION TO INFORMED SOURCE SEPARATION [Internet]. IEEE SigPort; 2018. Available from : http://sigport.org/3135

Decorrelation for Audio Object Coding

Lars Villemoes

Object-based representations of audio content are increasingly
used in entertainment systems to deliver immersive and
personalized experiences. Efficient storage and transmission
of such content can be achieved by joint object coding algorithms
that convey a reduced number of downmix signals
together with parametric side information that enables object
reconstruction in the decoder. This paper presents an
approach to improve the performance of joint object coding
by adding one or more decorrelators to the decoding process.

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Authors:
Lars Villemoes
Lars Villemoes, Toni Hirvonen, and Heiko Purnhagen
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19 May 2017 - 7:40am
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ICASSP2017_FINAL.pdf

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[1] Lars Villemoes, Toni Hirvonen, and Heiko Purnhagen, "Decorrelation for Audio Object Coding", IEEE SigPort, 2017. [Online]. Available: http://sigport.org/1795. Accessed: Apr. 25, 2019.
@article{1795-17,
url = {http://sigport.org/1795},
author = {Lars Villemoes; Toni Hirvonen; and Heiko Purnhagen },
publisher = {IEEE SigPort},
title = {Decorrelation for Audio Object Coding},
year = {2017} }
TY - EJOUR
T1 - Decorrelation for Audio Object Coding
AU - Lars Villemoes; Toni Hirvonen; and Heiko Purnhagen
PY - 2017
PB - IEEE SigPort
UR - http://sigport.org/1795
ER -
Lars Villemoes, Toni Hirvonen, and Heiko Purnhagen. (2017). Decorrelation for Audio Object Coding. IEEE SigPort. http://sigport.org/1795
Lars Villemoes, Toni Hirvonen, and Heiko Purnhagen, 2017. Decorrelation for Audio Object Coding. Available at: http://sigport.org/1795.
Lars Villemoes, Toni Hirvonen, and Heiko Purnhagen. (2017). "Decorrelation for Audio Object Coding." Web.
1. Lars Villemoes, Toni Hirvonen, and Heiko Purnhagen. Decorrelation for Audio Object Coding [Internet]. IEEE SigPort; 2017. Available from : http://sigport.org/1795

Pre-Echo Noise Reduction in Frequency-Domain Audio Codecs (Poster)

Jimmy Lapierre

One of the most common yet detrimental compression artifacts in frequency-domain audio codecs is known as pre-echo, which is perceived as a brief noise preceding transient signals, and is discernable even without direct comparison to the original signal. Because of its substantial negative impact on audio quality, many techniques have been proposed to alleviate it, but not without effect on coding efficiency.

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Authors:
Jimmy Lapierre
Jimmy Lapierre, Roch Lefebvre
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1 March 2017 - 7:11pm
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Poster

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[1] Jimmy Lapierre, Roch Lefebvre, "Pre-Echo Noise Reduction in Frequency-Domain Audio Codecs (Poster)", IEEE SigPort, 2017. [Online]. Available: http://sigport.org/1569. Accessed: Apr. 25, 2019.
@article{1569-17,
url = {http://sigport.org/1569},
author = {Jimmy Lapierre; Roch Lefebvre },
publisher = {IEEE SigPort},
title = {Pre-Echo Noise Reduction in Frequency-Domain Audio Codecs (Poster)},
year = {2017} }
TY - EJOUR
T1 - Pre-Echo Noise Reduction in Frequency-Domain Audio Codecs (Poster)
AU - Jimmy Lapierre; Roch Lefebvre
PY - 2017
PB - IEEE SigPort
UR - http://sigport.org/1569
ER -
Jimmy Lapierre, Roch Lefebvre. (2017). Pre-Echo Noise Reduction in Frequency-Domain Audio Codecs (Poster). IEEE SigPort. http://sigport.org/1569
Jimmy Lapierre, Roch Lefebvre, 2017. Pre-Echo Noise Reduction in Frequency-Domain Audio Codecs (Poster). Available at: http://sigport.org/1569.
Jimmy Lapierre, Roch Lefebvre. (2017). "Pre-Echo Noise Reduction in Frequency-Domain Audio Codecs (Poster)." Web.
1. Jimmy Lapierre, Roch Lefebvre. Pre-Echo Noise Reduction in Frequency-Domain Audio Codecs (Poster) [Internet]. IEEE SigPort; 2017. Available from : http://sigport.org/1569

Adaptive selection of lag-window shape for linear predictive analysis in the 3GPP EVS codec

Yutaka Kamamoto

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Authors:
Yutaka Kamamoto
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23 February 2016 - 1:44pm
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kmhGlobalSIP2015ALW_1212a.pdf

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[1] , "Adaptive selection of lag-window shape for linear predictive analysis in the 3GPP EVS codec", IEEE SigPort, 2015. [Online]. Available: http://sigport.org/489. Accessed: Apr. 25, 2019.
@article{489-15,
url = {http://sigport.org/489},
author = { },
publisher = {IEEE SigPort},
title = {Adaptive selection of lag-window shape for linear predictive analysis in the 3GPP EVS codec},
year = {2015} }
TY - EJOUR
T1 - Adaptive selection of lag-window shape for linear predictive analysis in the 3GPP EVS codec
AU -
PY - 2015
PB - IEEE SigPort
UR - http://sigport.org/489
ER -
. (2015). Adaptive selection of lag-window shape for linear predictive analysis in the 3GPP EVS codec. IEEE SigPort. http://sigport.org/489
, 2015. Adaptive selection of lag-window shape for linear predictive analysis in the 3GPP EVS codec. Available at: http://sigport.org/489.
. (2015). "Adaptive selection of lag-window shape for linear predictive analysis in the 3GPP EVS codec." Web.
1. . Adaptive selection of lag-window shape for linear predictive analysis in the 3GPP EVS codec [Internet]. IEEE SigPort; 2015. Available from : http://sigport.org/489

A PACKET LOSS RECOVERY TECHNIQUE WITH LINE SPECTRAL FREQUENCY MODIFICATION IN 3GPP EVS CODEC

Kimitaka Tsutsumi
Jeremie Lecomte

This paper examines a method for controlling the energy of decoded signal at the recovery frame from a packet loss. Our observation unveiled that a packet loss around speech onset causes sudden increase in the amplitude of the decoded signal at the recovery frame. To mitigate the artifact caused by the overshoot, a detector of the speech overshoot is proposed as well as a method that controls the amplitude of the decoded signal by adjusting distances of adjacent line spectral frequencies.

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Authors:
Kimitaka Tsutsumi
Jeremie Lecomte
Kei Kikuiri
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23 February 2016 - 1:44pm
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20151215_GlobalSIP2015_presentation.pdf

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[1] Kei Kikuiri, "A PACKET LOSS RECOVERY TECHNIQUE WITH LINE SPECTRAL FREQUENCY MODIFICATION IN 3GPP EVS CODEC", IEEE SigPort, 2015. [Online]. Available: http://sigport.org/385. Accessed: Apr. 25, 2019.
@article{385-15,
url = {http://sigport.org/385},
author = {Kei Kikuiri },
publisher = {IEEE SigPort},
title = {A PACKET LOSS RECOVERY TECHNIQUE WITH LINE SPECTRAL FREQUENCY MODIFICATION IN 3GPP EVS CODEC},
year = {2015} }
TY - EJOUR
T1 - A PACKET LOSS RECOVERY TECHNIQUE WITH LINE SPECTRAL FREQUENCY MODIFICATION IN 3GPP EVS CODEC
AU - Kei Kikuiri
PY - 2015
PB - IEEE SigPort
UR - http://sigport.org/385
ER -
Kei Kikuiri. (2015). A PACKET LOSS RECOVERY TECHNIQUE WITH LINE SPECTRAL FREQUENCY MODIFICATION IN 3GPP EVS CODEC. IEEE SigPort. http://sigport.org/385
Kei Kikuiri, 2015. A PACKET LOSS RECOVERY TECHNIQUE WITH LINE SPECTRAL FREQUENCY MODIFICATION IN 3GPP EVS CODEC. Available at: http://sigport.org/385.
Kei Kikuiri. (2015). "A PACKET LOSS RECOVERY TECHNIQUE WITH LINE SPECTRAL FREQUENCY MODIFICATION IN 3GPP EVS CODEC." Web.
1. Kei Kikuiri. A PACKET LOSS RECOVERY TECHNIQUE WITH LINE SPECTRAL FREQUENCY MODIFICATION IN 3GPP EVS CODEC [Internet]. IEEE SigPort; 2015. Available from : http://sigport.org/385

DELAY-LESS FREQUENCY DOMAIN PACKET-LOSS CONCEALMENT FOR TONAL AUDIO SIGNALS

Goran Markovic

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Authors:
Goran Markovic
Ralph Sperschneider, Janine Sukowski
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23 February 2016 - 1:44pm
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FD_Tonal_PLC_GlobalSIP2015.pdf

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[1] Ralph Sperschneider, Janine Sukowski, "DELAY-LESS FREQUENCY DOMAIN PACKET-LOSS CONCEALMENT FOR TONAL AUDIO SIGNALS", IEEE SigPort, 2015. [Online]. Available: http://sigport.org/320. Accessed: Apr. 25, 2019.
@article{320-15,
url = {http://sigport.org/320},
author = {Ralph Sperschneider; Janine Sukowski },
publisher = {IEEE SigPort},
title = {DELAY-LESS FREQUENCY DOMAIN PACKET-LOSS CONCEALMENT FOR TONAL AUDIO SIGNALS},
year = {2015} }
TY - EJOUR
T1 - DELAY-LESS FREQUENCY DOMAIN PACKET-LOSS CONCEALMENT FOR TONAL AUDIO SIGNALS
AU - Ralph Sperschneider; Janine Sukowski
PY - 2015
PB - IEEE SigPort
UR - http://sigport.org/320
ER -
Ralph Sperschneider, Janine Sukowski. (2015). DELAY-LESS FREQUENCY DOMAIN PACKET-LOSS CONCEALMENT FOR TONAL AUDIO SIGNALS. IEEE SigPort. http://sigport.org/320
Ralph Sperschneider, Janine Sukowski, 2015. DELAY-LESS FREQUENCY DOMAIN PACKET-LOSS CONCEALMENT FOR TONAL AUDIO SIGNALS. Available at: http://sigport.org/320.
Ralph Sperschneider, Janine Sukowski. (2015). "DELAY-LESS FREQUENCY DOMAIN PACKET-LOSS CONCEALMENT FOR TONAL AUDIO SIGNALS." Web.
1. Ralph Sperschneider, Janine Sukowski. DELAY-LESS FREQUENCY DOMAIN PACKET-LOSS CONCEALMENT FOR TONAL AUDIO SIGNALS [Internet]. IEEE SigPort; 2015. Available from : http://sigport.org/320

Enhanced AMR-WB Bandwidth Extension in 3GPP EVS Codec

Vaclav Eksler

This presentation describes the bandwidth extension (BWE) method developed for the AMR-WB interoperable (AMR-WB IO) modes of the 3GPP EVS codec. The low-band signal (0-6.4 kHz) is coded using an enhanced version of ACELP as in AMR-WB and post-processed; the high-band (above 6.4 kHz) in contrast to AMR-WB is represented with a new BWE method. The decoded low-band excitation is adaptively extended to high frequencies and filtered in the DCT domain. The extended excitation is scaled by subframe gains and shaped by a weighted LPC synthesis filter.

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Authors:
Vaclav Eksler
Magdalena Kaniewska, Stéphane Ragot, Zexin Liu, Lei Miao, Xingtao Zhang, Jon Gibbs
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23 February 2016 - 1:44pm
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EVS_AMR_WB_IO_BWE_GlobalSIP2015.ppt

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[1] Magdalena Kaniewska, Stéphane Ragot, Zexin Liu, Lei Miao, Xingtao Zhang, Jon Gibbs, "Enhanced AMR-WB Bandwidth Extension in 3GPP EVS Codec", IEEE SigPort, 2015. [Online]. Available: http://sigport.org/317. Accessed: Apr. 25, 2019.
@article{317-15,
url = {http://sigport.org/317},
author = {Magdalena Kaniewska; Stéphane Ragot; Zexin Liu; Lei Miao; Xingtao Zhang; Jon Gibbs },
publisher = {IEEE SigPort},
title = {Enhanced AMR-WB Bandwidth Extension in 3GPP EVS Codec},
year = {2015} }
TY - EJOUR
T1 - Enhanced AMR-WB Bandwidth Extension in 3GPP EVS Codec
AU - Magdalena Kaniewska; Stéphane Ragot; Zexin Liu; Lei Miao; Xingtao Zhang; Jon Gibbs
PY - 2015
PB - IEEE SigPort
UR - http://sigport.org/317
ER -
Magdalena Kaniewska, Stéphane Ragot, Zexin Liu, Lei Miao, Xingtao Zhang, Jon Gibbs. (2015). Enhanced AMR-WB Bandwidth Extension in 3GPP EVS Codec. IEEE SigPort. http://sigport.org/317
Magdalena Kaniewska, Stéphane Ragot, Zexin Liu, Lei Miao, Xingtao Zhang, Jon Gibbs, 2015. Enhanced AMR-WB Bandwidth Extension in 3GPP EVS Codec. Available at: http://sigport.org/317.
Magdalena Kaniewska, Stéphane Ragot, Zexin Liu, Lei Miao, Xingtao Zhang, Jon Gibbs. (2015). "Enhanced AMR-WB Bandwidth Extension in 3GPP EVS Codec." Web.
1. Magdalena Kaniewska, Stéphane Ragot, Zexin Liu, Lei Miao, Xingtao Zhang, Jon Gibbs. Enhanced AMR-WB Bandwidth Extension in 3GPP EVS Codec [Internet]. IEEE SigPort; 2015. Available from : http://sigport.org/317

A Novel Frequency Domain BWE with Relaxed Synchronization and Associated BWE Switching

Vaclav Eksler

This presentation describes a novel frequency domain bandwidth extension (BWE) scheme with relaxed synchronization, optimized for coding inactive and music/mixed content signals. The algorithm achieves high subjective quality at low and medium bitrates and it has a low algorithmic delay. The algorithm is part of the 3GPP Enhanced Voice Services (EVS) codec. In addition to the presented algorithm, the EVS codec employs also a time domain BWE scheme optimized for active speech coding.

Paper Details

Authors:
Vaclav Eksler
Lei Miao, Zexin Liu, Xingtao Zhang, Chen Hu, Jon Gibbs, Kihyun Choo, Eunmi Oh
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23 February 2016 - 1:44pm
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EVS_FD_BWE_GlobalSIP2015.pptx

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[1] Lei Miao, Zexin Liu, Xingtao Zhang, Chen Hu, Jon Gibbs, Kihyun Choo, Eunmi Oh, "A Novel Frequency Domain BWE with Relaxed Synchronization and Associated BWE Switching", IEEE SigPort, 2015. [Online]. Available: http://sigport.org/316. Accessed: Apr. 25, 2019.
@article{316-15,
url = {http://sigport.org/316},
author = {Lei Miao; Zexin Liu; Xingtao Zhang; Chen Hu; Jon Gibbs; Kihyun Choo; Eunmi Oh },
publisher = {IEEE SigPort},
title = {A Novel Frequency Domain BWE with Relaxed Synchronization and Associated BWE Switching},
year = {2015} }
TY - EJOUR
T1 - A Novel Frequency Domain BWE with Relaxed Synchronization and Associated BWE Switching
AU - Lei Miao; Zexin Liu; Xingtao Zhang; Chen Hu; Jon Gibbs; Kihyun Choo; Eunmi Oh
PY - 2015
PB - IEEE SigPort
UR - http://sigport.org/316
ER -
Lei Miao, Zexin Liu, Xingtao Zhang, Chen Hu, Jon Gibbs, Kihyun Choo, Eunmi Oh. (2015). A Novel Frequency Domain BWE with Relaxed Synchronization and Associated BWE Switching. IEEE SigPort. http://sigport.org/316
Lei Miao, Zexin Liu, Xingtao Zhang, Chen Hu, Jon Gibbs, Kihyun Choo, Eunmi Oh, 2015. A Novel Frequency Domain BWE with Relaxed Synchronization and Associated BWE Switching. Available at: http://sigport.org/316.
Lei Miao, Zexin Liu, Xingtao Zhang, Chen Hu, Jon Gibbs, Kihyun Choo, Eunmi Oh. (2015). "A Novel Frequency Domain BWE with Relaxed Synchronization and Associated BWE Switching." Web.
1. Lei Miao, Zexin Liu, Xingtao Zhang, Chen Hu, Jon Gibbs, Kihyun Choo, Eunmi Oh. A Novel Frequency Domain BWE with Relaxed Synchronization and Associated BWE Switching [Internet]. IEEE SigPort; 2015. Available from : http://sigport.org/316

Audio Bandwidth Detection in the EVS Codec

Vaclav Eksler

Speech and audio codecs are usually designed such that they encode all the frequency bands of the input signal spectrum. If the higher bands do not contain any perceptually meaningful content, these codecs often do not work optimally as they assign part of the available bit budget to encode these bands. In this paper we describe a bandwidth detection algorithm that determines the effective audio bandwidth of the input signal.

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Authors:
Vaclav Eksler
Milan Jelinek, Wolfgang Jaegers
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23 February 2016 - 1:44pm
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[1] Milan Jelinek, Wolfgang Jaegers, "Audio Bandwidth Detection in the EVS Codec", IEEE SigPort, 2015. [Online]. Available: http://sigport.org/315. Accessed: Apr. 25, 2019.
@article{315-15,
url = {http://sigport.org/315},
author = {Milan Jelinek; Wolfgang Jaegers },
publisher = {IEEE SigPort},
title = {Audio Bandwidth Detection in the EVS Codec},
year = {2015} }
TY - EJOUR
T1 - Audio Bandwidth Detection in the EVS Codec
AU - Milan Jelinek; Wolfgang Jaegers
PY - 2015
PB - IEEE SigPort
UR - http://sigport.org/315
ER -
Milan Jelinek, Wolfgang Jaegers. (2015). Audio Bandwidth Detection in the EVS Codec. IEEE SigPort. http://sigport.org/315
Milan Jelinek, Wolfgang Jaegers, 2015. Audio Bandwidth Detection in the EVS Codec. Available at: http://sigport.org/315.
Milan Jelinek, Wolfgang Jaegers. (2015). "Audio Bandwidth Detection in the EVS Codec." Web.
1. Milan Jelinek, Wolfgang Jaegers. Audio Bandwidth Detection in the EVS Codec [Internet]. IEEE SigPort; 2015. Available from : http://sigport.org/315

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