VM420E1 QuikVoice Sound Board
* Operation Mode: playback only
* No. of Channels: 1 (mono)
* Sound Quality: voice grade
* Sampling Method: CVSD
* Max. Sound Segments: 128
* Memory Type: EPROM (27C0x0)
* Max Memory Capacity: 64 M-bit
* Total Time: 34 minutes (32Kbps)
* Supply Voltage: 9~12 VDC
* Battery Operation: not suitable
* Output Power: 1W (4 Ohm load)
VM420E1 is a voice grade sound board which can play up to 128 different messages. It is totally
self-contained and requires only a power supply, a speaker and a few trigger signals to operate. VM420E1 has eight EPROM sockets and can store up to 34 minutes of audio in 32Kbps voice quality.
Desired messages are pre-programmed into non-volatile EPROM chips by using sound development system VP880 (for digitization) and standard EPROM programmer (for programming). Sampling rates from 24 to 64 Kbps are available for different sound quality vs. memory cost tradeoffs. Playback can be triggered by applying a 7-bit binary code and a strobe signal to the board’s input port which is directly compatible with most microprocessors and microcontrollers. The built-in power amplifier can deliver up to 1W into a speaker, with adjustable volume control.
VM420E1 is suitable for voice grade applications that do not require frequent message change or user recordability. For applications requiring higher sound quality or more flexible controls, please use QuikWave sound boards instead.