ISD2590S

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The ISD2590S is commonly used in high-speed in-vehicle recording applications, such as SIMPLEX radio communication and fleet intelligence recording. It is designed to digitize voice and provide a variety of ways to gain access to the voice recordings.

The ISD2590S is an All-in-One stand-alone voice recorder and playback device. It is a low cost, low power, complex speech recorder and playback device for automotive applications. It is based on ISD\'s Microchip 24-bit long SpeechIC DSP core, which provides a high level of integration and audio quality.

The ISD2590S includes a 24-bit CODEC, an on-chip ROM, an on-chip RAM, a microphone preamplifier, a serial interface, an internal clock, and a digital-to-analog converter and associated analog circuitry. The device supports low-cost, non-volatile, serial Flash memory and is available in 1, 2, 4, 8 and 16-bit resolution modes.

The ISD2590S supports high-speed recording and playback (20× real-time). The device can simultaneously playback two different audio channels. It has a programmable sample rate of 8 KHz to 48 KHz, and supports low-power, non-volatile, serial flash memory.

The working principle of the ISD2590S is very simple. First of all, voice signals are captured by a microphone and then converted from analog to digital format, via an on-chip microphone preamplifier. The digital signal is then passed through a digital signal processor and encoded into a memory. Finally, the encoded signal is stored onto a storage medium (e.g. Flash memory). When data is required, the signal is read from the memory, decoded, and converted back to analog format. The analog signal is then amplified and applied to an output speaker or headphone.

The ISD2590S has several advantages over conventional recording devices. It is compact, low cost, and consumes low power. It also has a low power serial interface, allowing it to be easily connected to other devices. Furthermore, the device is relatively easy to use and capable of providing high quality audio recordings.

The ISD2590S is suitable for a variety of uses, such as radio communication, fleet intelligence, audio recording, and audio playback. The device is particularly useful in automotive applications, as it can easily handle on-board audio recording and playback. As such, the ISD2590S is a perfect choice for in-vehicle audio applications.

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