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Audio stream Fourier analysis method based on Windows platform

An analysis method, a technology of audio streams, applied in speech analysis, instruments, etc.

Inactive Publication Date: 2020-08-18
紫光云技术有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] At present, sound collection based on various systems and platforms generally uses ordinary microphones and microphones to collect and record analog signals, and convert and forward digital signals, but few people analyze the components of sound: such as frequency (pitch), timbre (fret), amplitude (loudness)

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  • Audio stream Fourier analysis method based on Windows platform

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Embodiment Construction

[0016] It should be noted that, in the case of no conflict, the embodiments of the present invention and the features in the embodiments can be combined with each other.

[0017] In describing the present invention, it should be understood that the terms "center", "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", " The orientations or positional relationships indicated by "vertical", "horizontal", "top", "bottom", "inner" and "outer" are based on the orientations or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and Simplified descriptions, rather than indicating or implying that the device or element referred to must have a particular orientation, be constructed and operate in a particular orientation, and thus should not be construed as limiting the invention. In addition, the terms "first", "second", etc. are used for descriptive purposes only, and should not be understood ...

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Abstract

The invention provides an audio stream Fourier analysis method based on a Windows platform, and the method comprises the following steps: parameter setting: setting different audio parameters and a default audio channel through an interface to initialize available audio equipment, and enabling the audio equipment to enter a to-be-collected data state after the audio equipment is prepared; audio data collection: enabling audio equipment to collect and record audio streams, storing the received audio stream data in a cache, and waiting for conversion and analysis of the data; and audio data conversion. According to the audio stream Fourier analysis method based on the Windows platform, the Windows platform and a C++ development language are used as tools for sound collection, recording and analysis; and according to different set sampling bits, sampling speeds, sampling frequencies and conversion data points, the digital signals are subjected to Fourier transform, and the sound is displayed as a spectrogram, so that analysts can intuitively acquire sound data and can analyze the frequency and loudness of the sound, and parameters are provided for subsequent further deepening research.

Description

technical field [0001] The invention belongs to the field of audio stream Fourier analysis, in particular to a Windows platform-based audio stream Fourier analysis method. Background technique [0002] At present, sound collection based on various systems and platforms generally uses ordinary microphones and microphones to record analog signals, convert and forward digital signals, but few people analyze the components of sound: such as frequency (pitch), timbre (tone), amplitude (loudness). Contents of the invention [0003] In view of this, the present invention aims to propose a kind of audio stream Fourier analysis method based on the Windows platform, based on the Windows platform and with the C++ development language as a tool for the acquisition and analysis of sound, according to different sampling positions, sampling Speed, sampling frequency and number of transformed data points, perform Fourier transform on the digital signal, and display the sound as a spectro...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G10L25/18G10L25/72
CPCG10L25/18G10L25/72
Inventor 郭鹏
Owner 紫光云技术有限公司