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    • 4. 发明授权
    • Bitrate constrained variable bitrate audio encoding
    • 比特率约束可变比特率音频编码
    • US07895045B2
    • 2011-02-22
    • US12610615
    • 2009-11-02
    • Shyh-shiaw KuoHong KauraWilliam G. Stewart
    • Shyh-shiaw KuoHong KauraWilliam G. Stewart
    • G10L19/00G10L19/02
    • G10L19/035
    • A hybrid audio encoding technique incorporates both ABR, or CBR, and VBR encoding modes. For each audio coding block, after a VBR quantization loop meets the NMR target, a second quantization loop might be called to adaptively control the final bitrate. That is, if the NMR-based quantization loop results in a bitrate that is not within a specified range, then a bitrate-based CBR or ABR quantization loop determines a final bitrate that is within the range and is adaptively determined based on the encoding difficulty of the audio data. Excessive bitrates from use of conventional VBR mode are eliminated, while still providing much more constant perceptual sound quality than use of conventional CBR mode can achieve.
    • 混合音频编码技术包括ABR或CBR和VBR编码模式。 对于每个音频编码块,在VBR量化循环满足NMR目标之后,可以调用第二量化循环来自适应地控制最终比特率。 也就是说,如果基于NMR的量化循环导致不在特定范围内的比特率,则基于比特率的CBR或ABR量化循环确定在该范围内的最终比特率,并且基于编码难度自适应地确定 的音频数据。 消除了使用常规VBR模式的过多比特率,同时仍然提供比使用常规CBR模式可以实现更多的恒定的感知音质。
    • 5. 发明申请
    • UNIVERSAL CONTAINER FOR AUDIO DATA
    • 通用音频数据容器
    • US20100049530A1
    • 2010-02-25
    • US12574429
    • 2009-10-06
    • William G. StewartJames E. McCartneyDouglas S. Wyatt
    • William G. StewartJames E. McCartneyDouglas S. Wyatt
    • G10L21/04
    • G11B27/105G10L19/167G11B27/3027Y10S707/99945Y10S707/99948Y10S707/99953
    • Storing audio data encoded in any of a plurality of different audio encoding formats is enabled by parametrically defining the underlying format in which the audio data is encoded, in audio format and packet table chunks. A flag can be used to manage storage of the size of the audio data portion of the file, such that premature termination of an audio recording session does not result in an unreadable corrupted file. This capability can be enabled by initially setting the flag to a value that does not correspond to a valid audio data size and that indicates that the last chunk in the file contains the audio data. State information for the audio data, to effectively denote a version of the file, and a dependency indicator for dependent metadata, may be maintained, where the dependency indicator indicates the state of the audio data on which the metadata is dependent.
    • 以音频格式和分组表块中的音频格式和分组表块参数地定义音频数据被编码的底层格式,来存储以多种不同音频编码格式中的任何一种编码的音频数据。 可以使用标志来管理文件的音频数据部分的大小的存储,使得音频记录会话的过早终止不会导致不可读的损坏的文件。 可以通过初始将标志设置为不对应于有效的音频数据大小并指示文件中的最后一个块包含音频数据的值来启用此功能。 可以维持用于音频数据的状态信息,以有效地表示文件的版本和依赖性元数据的依赖性指示符,其中依赖性指示符指示元数据所依赖的音频数据的状态。
    • 6. 发明申请
    • UNIVERSAL CONTAINER FOR AUDIO DATA
    • 通用音频数据容器
    • US20120046956A1
    • 2012-02-23
    • US13285144
    • 2011-10-31
    • William G. StewartJames E. McCartneyDouglas S. Wyatt
    • William G. StewartJames E. McCartneyDouglas S. Wyatt
    • G10L19/00
    • G11B27/105G10L19/167G11B27/3027Y10S707/99945Y10S707/99948Y10S707/99953
    • Storing audio data encoded in any of a plurality of different audio encoding formats is enabled by parametrically defining the underlying format in which the audio data is encoded, in audio format and packet table chunks. A flag can be used to manage storage of the size of the audio data portion of the file, such that premature termination of an audio recording session does not result in an unreadable corrupted file. This capability can be enabled by initially setting the flag to a value that does not correspond to a valid audio data size and that indicates that the last chunk in the file contains the audio data. State information for the audio data, to effectively denote a version of the file, and a dependency indicator for dependent metadata, may be maintained, where the dependency indicator indicates the state of the audio data on which the metadata is dependent.
    • 以音频格式和分组表块中的音频格式和分组表块参数地定义音频数据被编码的底层格式,来存储以多种不同音频编码格式中的任何一种编码的音频数据。 可以使用标志来管理文件的音频数据部分的大小的存储,使得音频记录会话的过早终止不会导致不可读的损坏的文件。 可以通过初始将标志设置为不对应于有效的音频数据大小并指示文件中的最后一个块包含音频数据的值来启用此功能。 可以维持用于音频数据的状态信息,以有效地表示文件的版本和依赖性元数据的依赖性指示符,其中依赖性指示符指示元数据所依赖的音频数据的状态。
    • 8. 发明申请
    • UNIVERSAL CONTAINER FOR AUDIO DATA
    • 通用音频数据容器
    • US20090019087A1
    • 2009-01-15
    • US12109690
    • 2008-04-25
    • William G. StewartJames E. McCartneyDouglas S. Wyatt
    • William G. StewartJames E. McCartneyDouglas S. Wyatt
    • G06F17/30
    • G11B27/105G10L19/167G11B27/3027Y10S707/99945Y10S707/99948Y10S707/99953
    • Storing audio data encoded in any of a plurality of different audio encoding formats is enabled by parametrically defining the underlying format in which the audio data is encoded, in audio format and packet table chunks. A flag can be used to manage storage of the size of the audio data portion of the file, such that premature termination of an audio recording session does not result in an unreadable corrupted file. This capability can be enabled by initially setting the flag to a value that does not correspond to a valid audio data size and that indicates that the last chunk in the file contains the audio data. State information for the audio data, to effectively denote a version of the file, and a dependency indicator for dependent metadata, may be maintained, where the dependency indicator indicates the state of the audio data on which the metadata is dependent.
    • 以音频格式和分组表块中的音频格式和分组表块参数地定义音频数据被编码的底层格式,来存储以多种不同音频编码格式中的任何一种编码的音频数据。 可以使用标志来管理文件的音频数据部分的大小的存储,使得音频记录会话的过早终止不会导致不可读的损坏的文件。 可以通过初始将标志设置为不对应于有效的音频数据大小并指示文件中的最后一个块包含音频数据的值来启用此功能。 可以维持用于音频数据的状态信息,以有效地表示文件的版本和依赖性元数据的依赖性指示符,其中依赖性指示符指示元数据所依赖的音频数据的状态。
    • 9. 发明授权
    • Programmable electronic speed control
    • 可编程电子速度控制
    • US4313075A
    • 1982-01-26
    • US47959
    • 1979-06-11
    • William G. StewartDavid Lawhon
    • William G. StewartDavid Lawhon
    • H02P25/04H02P7/58
    • H02P25/04
    • A programmable electronic speed control for controlling the speed of a motor responsive to an ac signal source. A triac switch is interposed between the ac signal source and the motor. A programmable digital counter is connected between the ac signal source and the triac switch. The programmable counter counts zero voltage crossings of the ac signal generated by the ac signal source and repetitively causes the triac switch to alternately pass and block selectable numbers of cycles of the ac signal to the motor. The speed of the motor is determined by the relationship between the selectable numbers of cycles of the ac signal which are alternately passed and blocked by the triac switch. The speed control is particularly suited for use in controlling the pump motor and/or the program timer motor in a beverage dispensing machine.
    • 一种可编程电子速度控制器,用于根据交流信号源控制电机的速度。 三端双向可控硅开关置于交流信号源和电动机之间。 可编程数字计数器连接在交流信号源和三端双向可控硅开关之间​​。 可编程计数器计数由交流信号源产生的交流信号的零电压交叉,并重复地使三端双向可控硅开关交替地通过并阻止交流信号的可选数量的循环。 马达的速度由交流信号交替通过和阻塞的交流信号的可选择的周期数之间的关系决定。 速度控制特别适用于控制饮料分配机中的泵马达和/或程序定时器马达。