Abstract: An audio processing system includes a memory, and a processor. The processor is coupled to the memory, and, when executing a program stored in the memory, performs: receiving a first voice that is a voice uttered by a first speaker; determining whether or not a position of the first speaker can be identified; and outputting, to a target device, a voice command that is specified by a voice and is a signal for controlling the target device, the processor limiting output of a speaker position command related to a position of a speaker among the voice command in a case where the processor determines that the position of the first speaker cannot be identified.

Abstract: An in-vehicle communication device includes: a noise removal filter and a noise suppressor which are configured to remove running noise superimposed on a voice signal collected by a microphone; a band energy ratio corrector for correcting a band energy ratio reduced by the noise removal filter and the noise suppressor; and a variable bitrate encoder for transmitting a speech voice to the other party via a telephone network, the variable bitrate encoder compressing the speech voice corrected by the band energy ratio corrector. This can reduce the possibility that a voice classifier of the variable bitrate encoder erroneously determines voiced sound as voiceless sound and the voiced sound is erroneously compressed by voiceless sound-use low bitrate encoding. Consequently, even in low average bitrate communications, the speech voice in the in-vehicle environment can be provided to the other party at high quality.