| 摘要 |
Audio recordings and programs are saved as audio files on a digital storage unit in a language learning system comprising student units connected to the digital storage unit. The digital storage unit is provided with a audio interface controller (201) having a dedicated input/output RAM buffer (B1-B6 3) for each student station. Each RAM buffer has an associated file which is either a fixed file or can be defined for each case. When the audio interfac e controller (201) receives a record command relating to a specific buffer, th e controller (201) opens an audio file associated with the specific buffer, buffers the audio data received from a student station or another source in the buffer, and transfers the contents of the specified buffer to the opened associated audio file. Similarly, in response to a play command relating to a specific RAM buffer, the controller (201) opens an associated audio file in the digital storage unit, transfers audio data from the opened audio file to the buffer, and sends the audio data from the buffer to a respective student station or to other destination.
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