AUDIO PROCESSING HARDWARE ELEMENTS
    1.
    发明申请
    AUDIO PROCESSING HARDWARE ELEMENTS 失效
    音频处理硬件元件

    公开(公告)号:US20080229919A1

    公开(公告)日:2008-09-25

    申请号:US12042181

    申请日:2008-03-04

    IPC分类号: G10H7/00

    摘要: This disclosure describes techniques that make use of a plurality of hardware elements that operate simultaneously to service synthesis parameters generated from one or more audio files, such as musical instrument digital interface (MIDI) files. In one example, a method comprises storing audio synthesis parameters generated for one or more audio files of an audio frame, processing a first audio synthesis parameter using a first audio processing element of a hardware unit to generate first audio information, processing a second audio synthesis parameter using a second audio processing element of the hardware unit to generate second audio information, and generating audio samples for the audio frame based at least in part on a combination of the first and second audio information.

    摘要翻译: 本公开描述了利用多个硬件元件的技术,该多个硬件元件同时工作来服务从诸如乐器数字接口(MIDI)文件的一个或多个音频文件生成的合成参数。 在一个示例中,一种方法包括存储为音频帧的一个或多个音频文件生成的音频合成参数,使用硬件单元的第一音频处理元件处理第一音频合成参数以产生第一音频信息,处理第二音频合成 参数,使用所述硬件单元的第二音频处理元件来产生第二音频信息,以及至少部分地基于所述第一和第二音频信息的组合来生成所述音频帧的音频样本。

    PIPELINE TECHNIQUES FOR PROCESSING MUSICAL INSTRUMENT DIGITAL INTERFACE (MIDI) FILES
    2.
    发明申请
    PIPELINE TECHNIQUES FOR PROCESSING MUSICAL INSTRUMENT DIGITAL INTERFACE (MIDI) FILES 失效
    用于处理音乐数字接口(MIDI)文件的管道技术

    公开(公告)号:US20080229918A1

    公开(公告)日:2008-09-25

    申请号:US12042170

    申请日:2008-03-04

    IPC分类号: G10H7/00

    CPC分类号: G10H1/0066 G10H7/004

    摘要: This disclosure describes techniques for processing audio files that comply with the musical instrument digital interface (MIDI) format. In particular, various tasks associated with MIDI file processing are delegated between software operating on a general purpose processor, firmware associated with a digital signal processor (DSP), and dedicated hardware that is specifically designed for MIDI file processing. Alternatively, a multi-threaded DSP may be used instead of a general purpose processor and the DSP. In one aspect, this disclosure provides a method comprising parsing MIDI files and scheduling MIDI events associated with the MIDI files using a first process, processing the MIDI events using a second process to generate MIDI synthesis parameters, and generating audio samples using a hardware unit based on the synthesis parameters.

    摘要翻译: 本公开描述了用于处理符合乐器数字接口(MIDI)格式的音频文件的技术。 具体而言,与在通用处理器上运行的软件,与数字信号处理器(DSP)相关联的固件以及专门为MIDI文件处理而专门设计的专用硬件之间的任何与MIDI文件处理相关的各种任务被委派。 或者,可以使用多线程DSP来代替通用处理器和DSP。 在一个方面,本公开提供了一种方法,包括使用第一处理解析MIDI文件和调度与MIDI文件相关联的MIDI事件,使用第二处理来处理MIDI事件以产生MIDI合成参数,以及使用基于硬件单元生成音频样本 对合成参数。

    UNIFIED FILTER BANK FOR PERFORMING SIGNAL CONVERSIONS
    3.
    发明申请
    UNIFIED FILTER BANK FOR PERFORMING SIGNAL CONVERSIONS 有权
    用于执行信号转换的统一过滤器银行

    公开(公告)号:US20090024397A1

    公开(公告)日:2009-01-22

    申请号:US12174498

    申请日:2008-07-16

    IPC分类号: G10L19/00

    CPC分类号: G10L19/16 G10L19/0212

    摘要: A unified filter bank for performing signal conversions may include an interface that receives signal conversion commands in relation to multiple types of compressed audio bitstreams. The unified filter bank may also include a reconfigurable transform component that performs a transform as part of signal conversion for the multiple types of compressed audio bitstreams. The unified filter bank may also include complementary modules that perform complementary processing as part of the signal conversion for the multiple types of compressed audio bitstreams. The unified filter bank may also include an interface command controller that controls the configuration of the reconfigurable transform component and the complementary modules.

    摘要翻译: 用于执行信号转换的统一滤波器组可以包括接收关于多种类型的压缩音频位流的信号转换命令的接口。 统一的滤波器组还可以包括可重新配置的变换组件,其执行作为多种类型的压缩音频位流的信号转换的一部分的变换。 统一的滤波器组还可以包括作为多种类型的压缩音频比特流的信号转换的一部分执行补充处理的互补模块。 统一的滤波器组还可以包括控制可重构变换组件和互补模块的配置的接口命令控制器。

    WAVEFORM FETCH UNIT FOR PROCESSING AUDIO FILES
    4.
    发明申请
    WAVEFORM FETCH UNIT FOR PROCESSING AUDIO FILES 有权
    用于处理音频文件的波形FETCH单元

    公开(公告)号:US20080229911A1

    公开(公告)日:2008-09-25

    申请号:US12041834

    申请日:2008-03-04

    IPC分类号: G10H7/00

    摘要: This disclosure describes techniques that make use of a waveform fetch unit that operates to retrieve waveform samples on behalf of each of a plurality of hardware processing elements that operate simultaneously to service various audio synthesis parameters generated from one or more audio files, such as musical instrument digital interface (MIDI) files. In one example, a method comprises receiving a request for a waveform sample from an audio processing element, and servicing the request by calculating a waveform sample number for the requested waveform sample based on a phase increment contained in the request and an audio synthesis parameter control word associated with the requested waveform sample, retrieving the waveform sample from a local cache using the waveform sample number, and sending the retrieved waveform sample to the requesting audio processing element.

    摘要翻译: 本公开描述了利用波形获取单元的技术,其操作以代表同时操作的多个硬件处理元件中的每一个来检索波形采样,以服务从一个或多个音频文件(例如乐器)生成的各种音频合成参数 数字接口(MIDI)文件。 在一个示例中,一种方法包括从音频处理元件接收对波形样本的请求,并且通过基于包含在请求中的相位增量和音频合成参数控制来计算所请求的波形样本的波形采样数来为该请求提供服务 与所请求的波形样本相关联的单词,使用波形采样号从本地高速缓存中检索波形采样,以及将检索的波形样本发送到请求音频处理单元。

    Waveform fetch unit for processing audio files
    5.
    发明授权
    Waveform fetch unit for processing audio files 有权
    用于处理音频文件的波形提取单元

    公开(公告)号:US07807914B2

    公开(公告)日:2010-10-05

    申请号:US12041834

    申请日:2008-03-04

    IPC分类号: G10H7/00

    摘要: This disclosure describes techniques that make use of a waveform fetch unit that operates to retrieve waveform samples on behalf of each of a plurality of hardware processing elements that operate simultaneously to service various audio synthesis parameters generated from one or more audio files, such as musical instrument digital interface (MIDI) files. In one example, a method comprises receiving a request for a waveform sample from an audio processing element, and servicing the request by calculating a waveform sample number for the requested waveform sample based on a phase increment contained in the request and an audio synthesis parameter control word associated with the requested waveform sample, retrieving the waveform sample from a local cache using the waveform sample number, and sending the retrieved waveform sample to the requesting audio processing element.

    摘要翻译: 本公开描述了利用波形获取单元的技术,其操作以代表同时操作的多个硬件处理元件中的每一个来检索波形采样,以服务从一个或多个音频文件(例如乐器)生成的各种音频合成参数 数字接口(MIDI)文件。 在一个示例中,一种方法包括从音频处理元件接收对波形样本的请求,并且通过基于包含在请求中的相位增量和音频合成参数控制来计算所请求的波形样本的波形采样数来为该请求提供服务 与所请求的波形样本相关联的单词,使用波形采样号从本地高速缓存中检索波形采样,以及将检索的波形样本发送到请求音频处理单元。

    Unified filter bank for performing signal conversions
    6.
    发明授权
    Unified filter bank for performing signal conversions 有权
    用于执行信号转换的统一滤波器组

    公开(公告)号:US08185381B2

    公开(公告)日:2012-05-22

    申请号:US12174498

    申请日:2008-07-16

    CPC分类号: G10L19/16 G10L19/0212

    摘要: A unified filter bank for performing signal conversions may include an interface that receives signal conversion commands in relation to multiple types of compressed audio bitstreams. The unified filter bank may also include a reconfigurable transform component that performs a transform as part of signal conversion for the multiple types of compressed audio bitstreams. The unified filter bank may also include complementary modules that perform complementary processing as part of the signal conversion for the multiple types of compressed audio bitstreams. The unified filter bank may also include an interface command controller that controls the configuration of the reconfigurable transform component and the complementary modules.

    摘要翻译: 用于执行信号转换的统一滤波器组可以包括接收关于多种类型的压缩音频位流的信号转换命令的接口。 统一的滤波器组还可以包括可重新配置的变换组件,其执行作为多种类型的压缩音频位流的信号转换的一部分的变换。 统一的滤波器组还可以包括作为多种类型的压缩音频比特流的信号转换的一部分执行补充处理的互补模块。 统一的滤波器组还可以包括控制可重构变换组件和互补模块的配置的接口命令控制器。

    Power efficient batch-frame audio decoding apparatus, system and method
    7.
    发明授权
    Power efficient batch-frame audio decoding apparatus, system and method 有权
    高效率批量音频解码装置,系统及方法

    公开(公告)号:US08725520B2

    公开(公告)日:2014-05-13

    申请号:US12204593

    申请日:2008-09-04

    IPC分类号: G10L19/00 G06F17/00

    摘要: Power savings in a mobile device is accomplished by generating audio samples by decoding a bitstream with a decoding system within the mobile device. The generated audio samples are transferred into at least one memory bank in a set of memory banks in a power saver block within the mobile device. Parts of the decoding system not involved in the storing of the generated audio samples are switched off after batch decoding a bitstream associated with multiple audio frames. The bitstream includes bits less than that found in one audio file. At least one of the memory banks in the set of memory banks is power collapsible. The fetching of the decoded by the decoding system can be synchronized with a paging channel of a modem in the mobile device. The transferred audio samples is a lossless compression and may occur after a re-encoding.

    摘要翻译: 移动设备中的功率节省通过利用移动设备内的解码系统对比特流进行解码来生成音频样本来实现。 生成的音频样本被传送到移动设备内的节电块中的一组存储器组中的至少一个存储体。 在对与多个音频帧相关联的比特流进行批量解码之后,不涉及生成的音频样本的存储的部分解码系统被关闭。 比特流包括比在一个音频文件中发现的比特小的比特。 存储器组中的至少一个存储体是电源可折叠的。 由解码系统解码的提取可以与移动设备中的调制解调器的寻呼信道同步。 传输的音频样本是无损压缩,并且可能在重新编码之后发生。

    Mixing techniques for mixing audio
    8.
    发明申请
    Mixing techniques for mixing audio 有权
    混音技术混音

    公开(公告)号:US20070286426A1

    公开(公告)日:2007-12-13

    申请号:US11449454

    申请日:2006-06-07

    IPC分类号: H04R5/00

    摘要: This disclosure describes audio mixing techniques that intelligently combine two or more audio signals into an output signal. The techniques allow audio to be combined, yet create perceptual differentiation between the different audio signals. The result is that a user is able to hear both audio signals in a combined output, but the different audio signals do not perceptually interfere with one another. The techniques are relatively simple to implement and are well suited for radio telephones.

    摘要翻译: 本公开描述了将两个或多个音频信号智能地组合成输出信号的音频混合技术。 这些技术允许音频被组合,但是在不同音频信号之间产生感知差异。 结果是用户能够听到组合输出中的两个音频信号,但是不同的音频信号不会感知到彼此干扰。 这些技术实现起来相对简单,并且非常适合于无线电话。

    INTEGER REPRESENATION OF RELATIVE TIMING BETWEEN DESIRED OUTPUT SAMPLES AND CORRESPONDING INPUT SAMPLES
    10.
    发明申请
    INTEGER REPRESENATION OF RELATIVE TIMING BETWEEN DESIRED OUTPUT SAMPLES AND CORRESPONDING INPUT SAMPLES 有权
    所有输出样本和相应输入样本之间相对时间的整体表示

    公开(公告)号:US20070290900A1

    公开(公告)日:2007-12-20

    申请号:US11558313

    申请日:2006-11-09

    IPC分类号: H03M7/00

    CPC分类号: H03H17/0685

    摘要: In general, this disclosure describes techniques for changing a sampling frequency of a digital signal. In particular, the techniques provide a more accurate way to determining a relative timing between a desired output sample and a corresponding input sample using a non-approximated integer representation of the relative timing. The relative timing between the desired output sample and corresponding input sample may be represented using a first component that identifies a latest input sample of the digital signal used to generate intermediate samples, a second component that identifies an intermediate sample, and a third component that identifies a timing difference between the desired output sample and the intermediate sample. Each of the components may be recursively updated using non-approximated integer values.

    摘要翻译: 通常,本公开描述了用于改变数字信号的采样频率的技术。 特别地,这些技术提供了使用相对定时的非近似整数表示来确定期望输出采样和相应输入采样之间的相对定时的更精确的方法。 可以使用标识用于生成中间样本的数字信号的最新输入样本的第一组件,标识中间样本的第二组件和标识中间样本的第三组件来表示期望输出样本与相应输入样本之间的相对时序 所需输出样本和中间样本之间的时间差。 可以使用非近似的整数值递归地更新每个组件。