The invention relates to a different sound on line
detector for speaker based on time-
frequency analysis. The invention is mainly characterized in that a
signal generator is connected with a speaker through the wires, wherein the speaker is arranged in the
heat transmission hole at the top of a
noise elimination box, the bottom of the
noise elimination box is provided with a
microphone, the
microphone is corresponding to the speaker, the
microphone is connected with the input end of a collection card through wires, and is passed through A / D conversion, wave filter, time-
frequency conversion, fault classification and identification, then outputs the identification results. The invention has a simple whole structure, the installation and manufacturing costs are lower, by adopting the method of time-
frequency analysis, the speaker realizes rapidly and automatically intelligently detection in the
production line, and the detection is precise, the detection efficiency is higher, the invention effectively overcomes the subjective and described fault identification by
detector according to the experiences, and effectively ensures the healthy of the detectors; In addition, the invention is equally applicable to all the tuning of musical instruments, audio detection of
pitch, so as to guarantee precise and reliability of the tuning and
pitch of the musical instruments.