Audio Bitrate Choices in Remote Collaboration Tools: Sampling Theory in Practice
远程协作工具中的音频码率选择:采样定理的实际应用
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Zoom and Teams default to 48kbps Opus encoding, sufficient for speech intelligibility but insufficient for accurate prosody in multilingual team settings.
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According to Nyquist–Shannon theory, human voice energy peaks below 4kHz, yet emotional cues like stress or hesitation rely on harmonics up to 7kHz—lost at low bitrates.
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