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    • 2. 发明申请
    • MULTIPLE CHANNEL AUDIO ENCODER USING DIFFERENCE SIGNAL
    • 多声道音频编码器使用差分信号
    • US20070076908A1
    • 2007-04-05
    • US11469275
    • 2006-08-31
    • Julio CastanedaBrian AdairEric Penrod
    • Julio CastanedaBrian AdairEric Penrod
    • H04R5/02H04R1/02
    • H04R1/245H04M1/60H04M1/72522H04R2400/01H04R2499/11
    • A wireless device (300) receives and captures multiple-channel audio signals and outputs the multiple-channel audio signals on at least one channel output stream (606). The wireless device (300) includes a microphone (401) for capturing a first audio channel and at least one speaker (402) for capturing additional audio channels. Each speaker has a switch (403) to enable the speaker to operate as an additional microphone for capturing at least one additional audio channel. The device also has a comparator (404), connected to a plurality of audio channels including the first audio channel and any additional audio channels, so that the comparator identifies which of the audio channels has a predetermined signal strength so as to identify one of the audio channels as a reference audio channel (406, 405). Additionally, in one embodiment, the comparator identifies which of the audio channels has a predetermined phase and identifies one of the audio channels as a reference phase channel (406, 405). The device also has an encoder (407) for receiving the plurality of audio channels to produce an output over at least one channel where the reference audio channel forms a reference signal and the audio channels other than the reference signal each form a delta signal from the reference channel.
    • 无线设备(300)接收并捕获多声道音频信号并在至少一个声道输出流(606)上输出多声道音频信号。 无线设备(300)包括用于捕获第一音频通道的麦克风(401)和用于捕获附加音频通道的至少一个扬声器(402)。 每个扬声器具有开关(403),以使扬声器能够作为用于捕获至少一个附加音频通道的附加麦克风来操作。 该设备还具有连接到包括第一音频通道和任何附加音频通道的多个音频通道的比较器(404),使得比较器识别哪个音频通道具有预定的信号强度,以便识别 音频频道作为参考音频频道(406,405)。 另外,在一个实施例中,比较器识别哪个音频通道具有预定的相位,并且将一个音频通道识别为参考相位通道(406,405)。 该设备还具有用于接收多个音频通道以在至少一个通道上产生输出的编码器(407),其中参考音频通道形成参考信号,并且除参考信号之外的音频通道各自形成来自 参考通道。
    • 7. 发明申请
    • Wireless device for capturing multiple channel audio
    • 用于捕获多声道音频的无线设备
    • US20050254661A1
    • 2005-11-17
    • US10845752
    • 2004-05-14
    • Julio CastanedaBrian AdairEric Penrod
    • Julio CastanedaBrian AdairEric Penrod
    • H04M1/60H04M1/725H04R1/24H04R5/00H04R5/02
    • H04R1/245H04M1/60H04M1/72522H04R2400/01H04R2499/11
    • A wireless device (300) receives and captures multiple-channel audio signals and outputs the multiple-channel audio signals on at least one channel output stream (606). The wireless device (300) includes a microphone (401) for capturing a first audio channel and at least one speaker (402) for capturing additional audio channels. Each speaker has a switch (403) to enable the speaker to operate as an additional microphone for capturing at least one additional audio channel. The device also has a comparator (404), connected to a plurality of audio channels including the first audio channel and any additional audio channels, so that the comparator identifies which of the audio channels has a predetermined signal strength so as to identify one of the audio channels as a reference audio channel (406, 405). Additionally, in one embodiment, the comparator identifies which of the audio channels has a predetermined phase and identifies one of the audio channels as a reference phase channel (406, 405). The device also has an encoder (407) for receiving the plurality of audio channels to produce an output over at least one channel where the reference audio channel forms a reference signal and the audio channels other than the reference signal each form a delta signal from the reference channel.
    • 无线设备(300)接收并捕获多声道音频信号并在至少一个声道输出流(606)上输出多声道音频信号。 无线设备(300)包括用于捕获第一音频通道的麦克风(401)和用于捕获附加音频通道的至少一个扬声器(402)。 每个扬声器具有开关(403),以使扬声器能够作为用于捕获至少一个附加音频通道的附加麦克风来操作。 该设备还具有连接到包括第一音频通道和任何附加音频通道的多个音频通道的比较器(404),使得比较器识别哪个音频通道具有预定的信号强度,以便识别 音频频道作为参考音频频道(406,405)。 另外,在一个实施例中,比较器识别哪个音频通道具有预定的相位,并且将一个音频通道识别为参考相位通道(406,405)。 该设备还具有用于接收多个音频通道以在至少一个通道上产生输出的编码器(407),其中参考音频通道形成参考信号,并且除参考信号之外的音频通道各自形成来自 参考通道。