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Audio signal processing apparatus, audio signal processing method and a program

An audio signal processing and equipment technology, applied in speech analysis, instruments, etc., can solve problems such as difficult audio enhancement effects

Inactive Publication Date: 2013-04-17
SONY CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in the compression process, when it is assumed that the characteristics of volume boosting and compression are common, it is difficult to produce a high enhancement effect of audio, and in order to obtain a high effect, it is necessary to change the characteristics of each item of content

Method used

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  • Audio signal processing apparatus, audio signal processing method and a program
  • Audio signal processing apparatus, audio signal processing method and a program
  • Audio signal processing apparatus, audio signal processing method and a program

Examples

Experimental program
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no. 1 example

[0047] 2. About the second embodiment

no. 5 example

[0051] 6. Regarding the sixth embodiment

no. 7 example

[0053] [1. About the first embodiment]

[0054] will be figure 2 A block diagram of the audio signal processing device in the first embodiment of the present disclosure is shown in .

[0055] For example, figure 2 The illustrated audio signal processing device 100 may be configured as an internal device of an information processing device such as (A) a PC and (B) a portable terminal described earlier with reference to FIG. 1 , or may also be configured to be connected to each audio output device And an independent device that processes the audio signal output from the audio output device.

[0056] figure 2 The illustrated audio signal processing device 100 is configured as shown below. The audio signal processing device 100 is configured with an input unit 101, an input signal analysis and mapping control information determination unit 102, a microphone 111, a frequency band division unit 112, an environment analysis unit 113, a mapping control information adjustment unit ...

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Abstract

An audio signal processing apparatus which includes an input analysis unit which analyses the characteristics of an input signal and generates an input sound feature value,an environment analysis unit which analyses the characteristics of the environmental sound and generates an environmental sound feature value,a mapping control information generation unit which generates mapping control information as control information of amplitude conversion processing to the input signal by application of the input sound feature value and the environmental sound feature value,and a mapping process unit which performs amplitude conversion on the input signal based on a linear or non-linear mapping function determined according to the mapping control information and generates an output signal.

Description

technical field [0001] The present disclosure relates to an audio signal processing device, an audio signal processing method, and a program. The present disclosure specifically relates to, for example, a method of automatically controlling the reproduction level of an audio signal optimally for a user. Background technique [0002] For example, in the case of reproducing audio of movie content and music content with a large dynamic range of the audio volume using a portable device having a built-in small speaker, not only the volume of the audio is lowered as a whole, but speech at a low volume, etc. becomes especially hard to hear . [0003] Specifically, for example, as shown in FIG. 1 , among small devices, (A) is a PC including a small microphone and a small speaker, and (B) is a portable terminal including a small microphone and a small speaker. The size of the speaker is limited and cannot be obtained. The output volume is sufficient, and there is a problem that low...

Claims

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Application Information

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IPC IPC(8): G10L25/48
CPCG10L25/48
Inventor 河野明文知念彻辻实
Owner SONY CORP
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