公开(公告)号：US20110288860A1

公开(公告)日：2011-11-24

申请号：US13111627

申请日：2011-05-19

申请人： Andre Gustavo Pucci Schevciw ,  Erik Visser ,  Dinesh Ramakrishnan ,  Ian Ernan Liu ,  Ren Li ,  Brian Momeyer ,  Hyun Jin Park ,  Louis D. Oliveira

发明人： Andre Gustavo Pucci Schevciw ,  Erik Visser ,  Dinesh Ramakrishnan ,  Ian Ernan Liu ,  Ren Li ,  Brian Momeyer ,  Hyun Jin Park ,  Louis D. Oliveira

IPC分类号： G10L15/20

摘要： A noise cancelling headset for voice communications contains a microphone at each of the user's ears and a voice microphone. The headset shares the use of the ear microphones for improving signal-to-noise ratio on both the transmit path and the receive path.

摘要翻译： 用于语音通信的降噪耳机包括用户耳朵的每一个麦克风和语音麦克风。 耳机共享使用耳麦麦克风，以提高发射路径和接收路径上的信噪比。

公开(公告)号：US06233554B1

公开(公告)日：2001-05-15

申请号：US08989743

申请日：1997-12-12

申请人： Wade L. Heimbigner ,  James A. Hutchison, IV ,  Louis D. Oliveira

发明人： Wade L. Heimbigner ,  James A. Hutchison, IV ,  Louis D. Oliveira

IPC分类号： G10L1914

CPC分类号： H03M1/185

摘要： An audio band processor and a method and circuit for controlling its gain. The audio band processor comprises a first variable gain amplifier for receiving an analog audio signal; an analog to digital converter for converting the analog audio signal to a digital audio signal; and an interface circuit for encoding the digital audio signal. The interface circuit also arranges the digital audio signal into a sequence of encoded transmit frames, and receives a sequence of encoded receive frames, each receive frame comprising a predetermined number of encoded digital audio signal data bits and a predetermined number of digital gain control bits. The interface circuit also adjusts a gain level of the first variable gain amplifier in response to the digital gain control bits. In another embodiment, the audio band processor further comprises a second variable gain amplifier, and the interface circuit adjusts a gain level of the second variable gain amplifier in response to the digital gain control bits.

摘要翻译： 音频处理器以及用于控制其增益的方法和电路。 音频处理器包括用于接收模拟音频信号的第一可变增益放大器; 用于将模拟音频信号转换成数字音频信号的模数转换器; 以及用于对数字音频信号进行编码的接口电路。 接口电路还将数字音频信号排列成编码的发送帧序列，并且接收编码的接收帧序列，每个接收帧包括预定数量的编码数字音频信号数据位和预定数量的数字增益控制位。 接口电路还响应于数字增益控制位来调节第一可变增益放大器的增益电平。 在另一个实施例中，音频处理器还包括第二可变增益放大器，并且接口电路响应于数字增益控制位来调整第二可变增益放大器的增益电平。

公开(公告)号：US07929714B2

公开(公告)日：2011-04-19

申请号：US10916929

申请日：2004-08-11

申请人： Seyfollah Bazarjani ,  Louis D. Oliveira

发明人： Seyfollah Bazarjani ,  Louis D. Oliveira

IPC分类号： H04R3/00 ,  H04R25/00 ,  H03G3/00 ,  H03G7/00 ,  H05K1/14 ,  H01L23/02 ,  H01L23/34 ,  H01L23/04 ,  H01L23/48

CPC分类号： H04R19/005 ,  H01L2224/48091 ,  H01L2224/48137 ,  H01L2224/48145 ,  H01L2924/10253 ,  H01L2924/1461 ,  H01L2924/00014 ,  H01L2924/00 ,  H01L2924/00012

摘要： An integrated audio transducer with associated signal processing electronics is disclosed. A silicon audio transducer, such as a MEMS microphone or speaker, can be integrated with audio processing electronics in a single package. The audio processing electronics can be configured using control signals. The audio processing electronics can provide a single line serial data interface and a single line control interface. The audio transducers can be integrated with associated processing electronics. A silicon microphone can be integrated with an Analog to Digital Converter (ADC). The ADC output can be a single line serial interface. The ADC can be configured using a single line serial control interface. A speaker may be integrated with a Digital to Analog Converter (DAC). Audio transducers can also be integrated with more complex processing electronics. Audio processing parameters such as gain, dynamic range, and filter characteristics may be configured using the serial interface.

摘要翻译： 公开了一种具有相关信号处理电子器件的集成音频传感器 诸如MEMS麦克风或扬声器之类的硅音频换能器可以与单个封装中的音频处理电子装置集成。 可以使用控制信号来配置音频处理电子设备。 音频处理电子设备可以提供单行串行数据接口和单线控制接口。 音频传感器可以与相关的处理电子器件集成。 硅麦克风可以与模数转换器（ADC）集成。 ADC输出可以是单线串行接口。 ADC可以使用单线串行控制接口进行配置。 扬声器可以与数模转换器（DAC）集成。 音频传感器也可以与更复杂的处理电子元件集成。 可以使用串行接口来配置音频处理参数，如增益，动态范围和滤波器特性。