APR was a low cost high performance sound record/play IC widely used by Single chip, high quality voice recording and playback solution; User Quality Line Receiver; High Quality Analog to Digitaland PWM module. Voice Module 60 Sec project will playback and record up to 60 seconds of voice message. This circuit is an This circuit is based on APR IC from Aplus. General Description. The APR devi ce offers true single-chip voice recording, non-volatile storage, and playback capability for 40 to 60 sec- onds.

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There are two different ways to record a voice message onto the chip viz.

Recorded sound is retained even after power supply is removed from the module. This chip used flash non volatile memory to store up to voltage levels. This paper describes the concept using a microcontroller based system.

All the pins of the ports are for interfacing input output devices. If a lot of parts are being used in a small space it may be difficult to make a single sided board without jumpering over traces with a cable. Please refer to http: Second Duration user manual http: Its primary use is to display the latitude and longi- tude of the current location.

APR9600 Voice Recording Playback Module Support Single Chip

All normal C data types are supported along with pointers to constant arrays, fixed point decimal, and arrays of bits.

The procedures is the same as described above in MOD8, and the keys available in this mode are M1 and M2. GPS provides accurate location and time informa- tion for an unlimited number apr99600 people in all weather, day and night, anywhere in the world.

The locations names are pre recorded in the voice circuit and are announced when the person reaches those particular locations.


According to the datasheet, if you press and hold the message button M1-M8 appr9600 message is replayed repeatedly.

To record a message in moodule on of this location, you need to keep the Record Switch SW10 pressed with one finger and the Segment Switch pressed. An APR is a single chip voice recorder and playback device from Aplus integrated circuits. In order to save power supply a bias signal applied to microphone while playing, the ground return of this bias network is connected to normally to open side of record switch.

When the satellite signal is receieved by the GPS, the latitude and longitude of the current location is displayed on the LCD. Sampling rate for a 60 second recording period is 4.

This project is a 60 seconds voice record — playback module. GPS based blind man device with user input interfacing voice based intellectually moduoe the current location and gives the alert to the blind man if it was his destination area.

It stores the data of the current location which it receives from the GPS system, so that it can make use of the data stored to compare with the destination location of the user.

Microcontroller is the heart of the device. The IC can be controlled simp- ly using push button keys.

APR Voice Recording Playback Module Support Single Chip – Free Shipping – ThanksBuyer

The working of the system can be divided into two phases. In parallel access mode, sound can be rec- orded in 2, 4 or 8 sections. Check on this website http: It consists of 8 pins from D0 to D7 Port E: You May Also Like. The system employs a user friendly design and provides for an automatic location name announcement system.

Voice Recording and Play Back Circuit using APR9600

There is a simple process involved in recording these eight messages. The above disadvan- tage can be removed by using a higher efficiency GPS receiver.


Microphone amplifier, automatic gain control AGC circuit, intends anti-aliasing filter, integrated output amplifier and measure management etc. One of the limitations being function recursion is not allowed. This chip have many features like, one can select sample rates with consequent quality and recording times. Press the restart button iii. Currently they are some of the most popular microcontrollers, selling over million devices each year.

When using a double sided board we must consider which traces should be on what side of the board. This circuit will help you record and play a 60 seconds voice message stored on it. The module comes with a GPIO control pin for controlling the power. Connect a appropriate speaker should not lower than 8 Ohms at LS1, For playing a recorded message you just need to press and release any of the switch available in that particular mode once.

In order to hear what we have recorded, we just need to press and hold the corresponding selection button for 1sec and the recorded message would be replayed. Can you help me?

Voice Recording and Play Back Circuit using APR – Best Engineering Projects

Microphone connected to IC through couple capacitors C 3 and C 4 respectively as shown voide circuit diagram. PIC compiler also supports C language code. Recording will modul when you release both these keys and when it reaches the end of the segment.

I edit and author this site. A double sided board is more expensive to produce professionally, more difficult to etch on a DIY board, but makes the layout of components a lot smaller and easier.