Organisation internationale de normalisation

Tonal Components CE

Panji Setiawan, Huawei, presented

m36441	Huawei Munich Listening Test Site Properties	Milos Markovic, Fons Adriaensen, Panji Setiawan
m36442	Huawei Listening Test Report on Tonal Component Coding CE	Milos Markovic, Panji Setiawan
m36545	Intention to Participate on Tonal Component Coding CE	Panji Setiawan, Karim Helwani, Milos Markovic

The first contribution describes a new Huawei test site in Munich, Germany. An audio consulting firm Müller-BBM was used in the design, and the result satisfies BS.1116 reverberation requirements and achieves NR-10 noise level.

The second contribution reports on a cross-check listening test result. This test was conducted using loudspeakers. The listening test was:

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  12 stereo test items coded at 20 kb/s
  
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  One 9-channel test item coded at 128 kb/s
  

For absolute scores using stereo items, and the one 9-channel item, there was no difference at the 95% level of confidence. For differential scores using stereo items, there was no difference for any individual item or the mean at the 95% level of confidence.

The third contribution announces that Huawei will contribute to this CE. The Audio subgroup looks forward to some additional information at the next meeting.

Max Neuendorf, FhG-IIS, presented

m36536

FhG crosscheck report for tonal component coding CE

Srikanth Korse, Max Neuendorf

The contribution reports on a cross-check listening test result. This test was conducted using headphones. For absolute scores using stereo items, and the one 9-channel item, there was no difference at the 95% level of confidence. For differential scores using stereo items, two items (id4, salvation) were better and 1 item (phi7) was worse and there was no difference for the mean at 95% level of confidence.

For differential scores using the 9-channel items, the item was better at 95% level of confidence.

Lukasz Januszkiewicz, Zylia, presented

m36540	Zylia Listening Test Report on Tonal Component Coding CE	Tomasz Zernicki, Lukasz Januszkiewicz
m36538	Updated MPEG-H 3D Audio Phase 2 Core Experiment Proposal on tonal component coding	[e-mail],Tomasz Zernicki, [e-mail],Lukasz Januszkiewicz

The contribution gave an overview of the technology, which is slightly revised since the last MPEG meeting. The technology

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  Complements the eSBR tool
  
• 
  Enhances the quality of highly tonal signals
  

Technical changes

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  Segment lengths are 8, 16, 32 frames
  
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  Maximum of 8 tone trajectories
  
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  Maximum delay is 10,240.
  
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  Typical complexity is 0.13 WMOPS for the tool
  
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  Maximum complexity is 3 WMOPS, or 3/121 = 2.5 percent of total decoder complexity
  

Technical review

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  210 ms encoder delay (needed to estimate trajectories)
  
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  No delay at the decoder side
  
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  Without meaning to, the CE encoded signals are slightly lower than the target bitrate
  

The contribution reports on a listening test result. All stereo items were from the USAC CfP signal set. This test was conducted using headphones. For absolute scores using stereo items, and the one 9-channel item, there was no difference at the 95% level of confidence.