METHOD AND SYSTEM FOR PROCESSING HIGH QUALITY AUDIO IN A HARDWARE AUDIO CODEC FOR AUDIO TRANSMISSION
First Claim
1. A method for processing audio signals, the method comprising:
- in a hardware audio CODEC;
down-sampling an audio signal via a cascade of a plurality of filters and a plurality sample rate converters; and
selecting, at an output of one or more of said plurality of filters, a portion of each sample of said audio signal based on an origin of said audio signal.
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Accused Products
Abstract
Aspects of a method and/or system for processing high quality audio in a hardware audio CODEC for audio transmission are provided. In this regard, an audio signal may be down-sampled via a cascaded plurality of filters and sample rate converters in the hardware audio CODEC. Additionally, a portion of each sample of the audio signal may be selected based on an origin of the audio signal. The selected portion of each sample of the audio signal may comprise 16 or 18 bits. The selected portion may be determined based on a type, a class, a manufacturer identifier, and/or a model identifier of the origin the audio signal. Coefficients of the filters may be configured based on the origin of the audio signal. One or more of the filters may comprise one or more cascaded biquads. The sample rate converters may comprise one or more CIC decimation filters.
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Citations
20 Claims
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1. A method for processing audio signals, the method comprising:
in a hardware audio CODEC; down-sampling an audio signal via a cascade of a plurality of filters and a plurality sample rate converters; and selecting, at an output of one or more of said plurality of filters, a portion of each sample of said audio signal based on an origin of said audio signal. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A system for processing audio signals, the system comprising:
one or more circuits for use in a hardware audio CODEC comprising a cascade of a plurality of filters and a plurality of sample rate converters, said one or more circuits operable to; down-sample an audio signal; and select, at an output of one or more of said plurality of filters, a portion of each sample of said audio signal based on an origin of said audio signal. - View Dependent Claims (12, 13, 14, 15, 16, 17, 18, 19, 20)
Specification