The QV381m0 is the latest in a family of speech recording and playback modules designed to complement the existing range of Quadravox speech products.The QV381m0 module employs a sophisticated micro-controller running a dynamic message allocation algorithm, which in-conjunction with the ISD 5008 device offers the user considerable quality and flexibility. The circuit diagram of the module is shown in Figure 1.The module permits messages to be to be recorded at different sampling rates. The sampling rate selected will depend very much on the desired quality of the sound being reproduced and also the length of the required message/messages. The sampling rate can be varied from message to message as required. After having selected a suitable sampling rate the user can record, playback and erase individual messages on command.