Analysis System, Based On The Dsp Sounds

The piano musical instrument each key or chord send out the sound of different adjust type different pitch, however, these piano musical instrument each key or chord usually deviate the pitch that should have, causing to could not give musical performance the music result that should have, this needs to periodically adjust to these musical instruments. Enjoying the phonic pitch has something to do with frequency, differently the adjust type pitch of dissimilarity is the frequency which depends orotund signal to distinguish analyse of, therefore judge the piano musical instrument each key or chord whether pronunciation is accurate or not can pass to measure its frequency chart to judge.According to the above-mentioned reason, this text analyzed to sign the leaf s transformation analysis piano audio frequency table the possibility of the composing with the fast leaf's transformation , putting forward a kind of use the development environment, digital signal processor of the Studio integration of the Code Composer, A/D conversion machine and RS-232 connect to carry on frequency chart analysis to the piano news number of project, and designed a set of piano news number to collect according to that project and the frequency chart analyze system. That system makes use of the A/D conversion machine to collect piano news number first; Make use of the digital signal processor chip of the TMS320 VC5416 of TI company to carry on fast leaf s transformation to sign leaf s transformation to the piano news number for collecting immediately after, analyze piano news the frequency chart of the number composing; Then make use of RS-232 to connect to send out the frequency chart data of analytical to the PC machine; Finally, Make use of Code Composer Studio an integration development environment to carry on manifestation and analysis to the piano audio frequency table data for receiving.Analyze to electronic organ musical instrument actual collection...