Method and apparatus for audio information storage broadcasting

Abstract

A method and the device for the message memory and play includes a CD-ROM to read the message, a memory device to memory the message, a microprocessor to control the message playing in the CD-ROM and the memory device and a buffer storage to store the message storage playing action cooperating with the microprocessor. The playing action includes the copying process, the compressing process, the playing process and the controlling process. It sets the playing and controlling process to use the microprocessor firstly, the copying process copies the uncompressing digital message to the memory device and uses the residue resource to operate the compressing process. So the efficient has improved greatly.

Description

technical field [0001] The invention relates to a method and device for storing and playing audio, in particular to a method for reading and storing audio recorded on an optical disc in an integrated device of an optical drive and a hard disk to a hard disk for playback. Background technique [0002] Due to the large volume of optical discs, it is very inconvenient to carry, retrieve and organize multiple discs. Therefore, the existing optical disc player integrates a hard disk, and utilizes the characteristics of the small volume and large storage capacity of the hard disk. The audio from multiple discs is read out one by one by the optical drive, compressed and then transferred to the hard disk. Taking a 6Gbye hard disk as an example, it can store about 1000 songs, which is very convenient to use. [0003] As shown in Figure 1, the existing optical disc player with integrated hard disk mainly controls the optical drive 4 to read the audio from the disc through the operatio...

AI Technical Summary

Problems solved by technology

However, most of the audio compressors are digital signal processors (Digital Signal Processor; DSP), or the general central processing unit (CPU) is implemented by software (Implementation), so there are limitations that cannot achieve high processing rates, resulting in a large amount of processing performance. The audio compressor 5 or audio decompressor 7 of the

In addition, the audio compressor 5 and the audio decompressor 7 use the same DSP or CPU hardware resource. In order to maintain a smooth playback process, the audio decompressor 7 has a higher priority, which makes it easier to change the speed of the audio compressor 5. more slowly

Especially for general consumer electronic products, such as those used in car, home or portable audio systems, their hardware resources are even more scarce. In order to avoid further degradation of the performance of the audio compressor 5, users often cannot smoothly change the chip and control the progress. Operating functions such as backtracking or song selection, causing the user to wait for a period of time before continuing to copy the next disc

Therefore, the existing optical disc player with integrated hard disk still has problems to be solved.

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