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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It is also possible to control the IC using external digital circuitry such as micro- controllers and computers. The play of message is also indicated by the flashing of LED, D2. Recorded sound is retained even after power supply is removed from the module.
Voice Recording and Play Back Circuit using APR9600
Proteus is a software which accepts only hex files. If you have any comments or suggestions please use our contact page We strictly ignore emails regarding post helps or explanation of circuits and projects ; for those purpose please use our omdule feature ; We will surely help you by replying to your comment; It may helps other too.
Currently they are some of the most popular microcontrollers, selling over million devices each year. Easy Electronic Projects 5. After getting the signal, if we want to store the present location modlue an alerting location for the blind person, the following procedure will do the needful — i.
There are two different ways to record a voice message onto the chip viz. The microcontroller is programmed in such a way that depending on the satellite information of modkle the predefined location name will be announced. All normal C data types are supported along with pointers to constant arrays, fixed point decimal, and arrays of bits. There are basically four families of PIC microcontrollers: Active data means, when the GPS receiver gets the satellite sig- nal it vojce give the current location values.
When we finish recording, the selection button is released.
To achieve this mode J1 and J2 should be closed. Release the restart button after 1sec iv.
2 SYSTEM REQUIREMENTS
Once the machine code is converted into a hex code, that hex code has to be dumped into the microcontroller and this is done by Proteus. This information is provided by the GPS with the help of the data it receives from the satellites. GPS based blind man device with user input interfacing voice based intellectually finds the current location and gives the alert to the blind man if it was his destination area. GPS based voice alert system for the blind uses the current location and gives the.
A device or system that supplies electrical or other types of energy to an output load or group of loads is called a power supply unit or PSU. Increasing the sampling rate will modu,e the total amount of recording time and vice-versa. According to sample frequency modjle for recording, inter anti-aliasing is automatic adjusted its response. Once the ic starts playing will it be playing again and again itself or it will stop after playing the recorded music 60 sec.
It stores the data of the current location which it receives from the GPS system, so that aor9600 can make use of the ap9r600 stored to compare with the destination location of the user.
APR Voice Recording Playback Module Support Single Chip $ Free Shipping @
The second phase deals with receiving the signal from the GPS receiver and actuating the voice module using the microcontroller. Sampling rate for a 60 second recording period is 4. According to the datasheet, if you press and hold the message button M1-M8 the message is replayed repeatedly. 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.
This circuit will help you record and play a 60 seconds voice message stored on it. Basically, all PIC microcon- trollers offer the following features:.
Abstract voide GPS is employed to find the position of the user on the earth. Microphone amplifier, automatic gain control AGC circuit, intends anti-aliasing filter, integrated output amplifier and measure management etc. Jumper J3 on the PCB to select audio source. For anyone with a GPS receiver, the system will provide location and time.
In this system, the GPS receiver and the control buttons are the input modules to the microcontroller while the Voice module and the LED indicators are the output modules to the microcontroller.
The module comes with a GPIO control pin for controlling the power. Also select the source for recording through CN1 Connector. All the pins of the ports are for interfacing input output devices.
The first phase would involve recording of the voice in the voice module. This is due to the fact that the PIC has no stack to push variables onto, and also because of the way the compilers optimize the code. Microphone connected to IC through couple capacitors C 3 and C 4 respectively voide shown in circuit diagram.
The procedures is the same as described above in MOD8, and the keys available in this mode are M1 and M2. The project provides four different modes of voice message to be recorded and played, viz i MOD8: Leave a Reply Cancel reply.
This signal is further amplifier by inbuilt pre-amplifier and by connecting pin 21 to pin 20 via an external DC locking capacitor C 1. When making a PCB we have the option of making a single sided board, or a double sided board.
The only major disadvantage of this system is the time taken by the Midule to receive its initial signal from the sa- tellite, i.
This short- ens the total length of sound recording to 32 seconds. Here instead of an alarm sound the blind man can directly hear the location rec- orded by the user itself. Voice Module 60 Sec project will playback and record up to 60 seconds of voice message.
The given voice signal and first sampled and then the corresponding instantaneous voltage samples are stored in the non-volatile flash memory cell in 8-bit binary encoded format. You can connect with me on: