Apparatus and method for reproducing audio data
OwnerMasahiro Fukudainventor
Life of this patent
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Abstract
In an apparatus for reproducing audio data, a non-silent sound/silent sound determining section determines whether the audio data is a non-silent sound or a silent sound in accordance with a level of the audio data, to thereby generate a first determination result. A speech sound/non-speech sound determining section determines whether the audio data is a speech sound or a non-speech sound in accordance with an absolute value of a difference between left-side and right-side stereochannel component levels of the audio data, to thereby generate a second determination result. An audio data selecting/removing unit selects or removes the audio data in accordance with the first and second determination results.
Claims18
An apparatus for reproducing audio data comprising:
- a non-silent sound/silent sound determining section adapted to determine whether said audio data is a non-silent sound or a silent sound in accordance with a level of said audio data, to thereby generate a first determination result;
- a speech sound/non-speech sound determining section adapted to determine whether said audio data is a speech sound or a non-speech sound in accordance with an absolute value of a difference between left-side and right-side stereochannel component levels of said audio data, to thereby generate a second determination result;
- and
- an audio data selecting/removing unit adapted to select or remove said audio data in accordance with said first and second determination results.
An apparatus for reproducing a plurality of M frames (M=2, 3, . . . ) audio data comprising:
- a non-silent sound/silent sound determining section adapted to determine whether each of said M frames is a non-silent sound or a silent sound in accordance with left-side and right-side stereochannel component levels of said each of said M frames, to thereby generate a first determination result;
- a speech sound/non-speech sound determining section adapted to determine whether each of said frames is a speech sound or a non-speech sound in accordance with an absolute value of a difference between the left-side and right-side stereochannel component levels of said each of said M frames, to thereby generate a second determination result;
- and
- a frame selecting/removing unit adapted to select N frames (N=1, 2, . . . and N<M) from said M frames and remove (M-N) frames from said M frames in accordance with pairs of said first and second determination results of said M frames, thus reproducing only said N frames.
A method for reproducing audio data comprising:
- determining whether said audio data is a non-silent sound or a silent sound in accordance with a level of said audio data, to thereby generate a first determination result;
- determining whether said audio data is a speech sound or a non-speech sound in accordance with an absolute value of a difference between left-side and right-side stereochannel component levels of said audio data, to thereby generate a second determination result;
- and
- selecting or removing said audio data in accordance with said first and second determination results.
A method for reproducing a plurality of M frames (M=2, 3, . . . ) audio data comprising:
- determining whether each of said M frames is a non-silent sound or a silent sound in accordance with left-side and right-side stereochannel component levels of said each of said M frames, to thereby generate a first determination result;
- determining whether each of said frames is a speech sound or a non-speech sound in accordance with an absolute value of a difference between the left-side and right-side stereochannel component levels of said each of said M frames, to thereby generate a second determination result;
- and
- selecting N frames (N=1, 2, . . . and N<M) from said M frames and removing (M-N) frames from said M frames in accordance with pairs of said first and second determination results of said M frames, thus reproducing only said N frames.
Dependencies are inferred from the claim text.