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FDK-AAC encoder uses band pass filter, which is automatically applied at all bitrates. For CBR encoding mode, its values are as follows (for stereo): * 0-12 kb/s: 5 kHz * 12-20 kb/s: 6.4 kHz * 20-28 kb/s: 9.6 kHz * 40-56 kb/s: 13 kHz * 56-72 kb/s: 16 kHz * 72-576 kb/s: 17 kHz VBR uses the following table (stereo): * Mode 1: 13 kHz * Mode 2: 13 kHz * Mode 3: 15.7 kHz * Mode 4: 16.5 kHz * Mode 5: 19.3 kHz 17 kHz for CBR is a limiting value for high bitrate. Assume >110 kbit/s as a "high bitrate" CBR and increase the band pass cutout up to 19.3 kHz (as in mode 5 VBR). Link: |
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| aec | ||
| alsa | ||
| audioconvert | ||
| audiomixer | ||
| audiotestsrc | ||
| avb | ||
| bluez5 | ||
| control | ||
| ffmpeg | ||
| filter-graph | ||
| jack | ||
| libcamera | ||
| support | ||
| test | ||
| v4l2 | ||
| videoconvert | ||
| videotestsrc | ||
| volume | ||
| vulkan | ||
| meson.build | ||