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    • 9. 发明授权
    • Adjusting a data rate of a digital audio stream based on dynamically determined audio playback system capabilities
    • 基于动态确定的音频播放系统功能调整数字音频流的数据速率
    • US09286904B2
    • 2016-03-15
    • US13412987
    • 2012-03-06
    • Carl WakelandWilliam Herz
    • Carl WakelandWilliam Herz
    • G06F17/00G10L19/24G10L19/002
    • G10L19/24G10L19/002
    • A computing device may be configured to output a digital audio stream to an audio playback system for rendering as sound over speakers. The sound may be sampled. Based at least in part on a quality of the sampled sound, the data rate of the digital audio stream may be reduced by reducing a sampling rate and/or by reducing a number of bits per sample. A reduced sampling rate may be determined based on a computed maximum sampling rate of the audio playback system, and/or a reduced number of bits per sample may be determined based on a computed maximum number of bits per sample of the audio playback system. The maximum usable sampling rate and maximum usable number of bits per sample may be determined based on an upper usable frequency within a frequency spectrum of the sampled sound.
    • 计算设备可以被配置为将数字音频流输出到音频回放系统,以便在扬声器上呈现为声音。 声音可能被采样。 至少部分地基于采样声音的质量,可以通过降低采样率和/或通过减少每个采样的位数来减少数字音频流的数据速率。 可以基于所计算的音频重放系统的最大采样率来确定降低的采样率,和/或可以基于计算出的每个音频播放系统的样本的最大位数来确定每个采样的减少的位数。 可以基于采样声音的频谱内的较高可用频率来确定每个样本的最大可用采样率和最大可用位数。