AudioAnalyser

The program "AudioAnalyser" is a realtime frequency analyser for audio signals.

You can combine the "AudioAnalyser" with my other application "Multisine", if your soundcard supports the full duplex mode (only very old soundcards don't). With this combination you have a full equipped audio suite for your measurements.
The application is written in C++ and uses the VCL library and Win Api calls.

Feature list of AudioAnalyser V1.9:

Samplingrate 4000 Hz ... 48 kHz
FFT length 256 ... 32768 points
Stereo and Mono mode
Averaging mode (1-20)
Max hold mode
5 different windows (Hanning, Hamming, Blackman, Blackman Harris, Rectangular)
Linear and logarithmic frequency axis
Possibility to store the diagram as bitmap
Possibility to store measurement data in a text file
Vector Scope for stereo width and phase analysis
Level Meter
31 band analyser
2 markers available
Variable axis settings
Level Correction value

System requirements:

Windows 95/98, Windows 2000 or Windows XP
Soundcard

Release Notes:

AudioAnalyser V1.9

Date: 31.07.2006
Added measurement data export
Added 31 band analyser

AudioAnalyser V1.81

Date: 24.01.2006
Removed data acquisition bug in stereo mode

AudioAnalyser V1.8

Date: 22.01.2006
Added Level Meter
Mainwindow is now sizeable

AudioAnalyser V1.7

Date: 11.01.2006
Improved measurement speed

AudioAnalyser V1.6

Date: 05.01.2006
Added max hold mode
Added functionality to clear data

AudioAnalyser V1.51

Date: 16.08.2005
AudioAnalyser back again provided as freeware

AudioAnalyser V1.5

Date: 31.07.2005
Added marker functionality
Added graphical options
introduces demo and full version of AudioAnalyser
removed some bugs

AudioAnalyser V1.4

Date: 06.06.2005
Added Averaging functionality

AudioAnalyser V1.3

Date: 31.03.2005
Added Vector Scope
Removed some bugs

AudioAnalyser V1.2

Date: 19.03.2005
Added 2nd Channel for stereo Analysis
Moved Data Aquisition into own thread

AudioAnalyser V1.1

Date: 10.02.2005
Initial Revision
One Channel (Mono)