ISD1700 voice module.
It is a simple and practical circuit board designed to quickly get familiar with and master the ISD1700 series chips.
Suitable for the full range of ISD1700 chips and has the characteristics of simple operation and complete functions.
1.The ISD1700 chip is a highly integrated,high-performance chip.
2.It can store multiple recordings,and the sampling rate can be adjusted from 4K to 12K.
3.It also has a new recording prompt function.
4.The recording data is stored in the FLASH of the chip without any compression,so it has better sound quality and power-off storage.
5.The chip has two independent voice signal input channels,microphone input and analog signal input.
6.It has a power indicator light and a chip indicator light to show the working status.
1.Product Name:ISD1700 Voice Module
2.Supply Voltage: DC 5V
3.Recording Time:75 seconds (6KHz), 60 seconds (8KHz)
Instructions for use:
1.1.Press and hold the REC button,and the LED light will light up at the same time.When you speak to the MIC,the content of your speech will be recorded into the ISD1700 voice chip.
1.2.After recording a paragraph,raise this button,the LED will be off at the same time,press it again to start recording the second paragraph,and the subsequent paragraphs will be operated in sequence.
2.Play:There are two ways,edge trigger and level trigger. (Note: After recording,the playback pointer will stay at the start address of the last recorded segment,and at this time,the last segment will be played)
2.1.Edge trigger: Click the PL AY button to play the current segment.During the playback, the LED flashes until it goes out when the playback ends.After the playback ends,the playback pointer points to the start address of the segment just played,and pressing the PLAY button again will play the segment just finished.
2.2.Level trigger: often press the PLAY button,the chip will play all the voice messages,and loop until the button is released.
3.Fast forward FWD:
3.1.Before performing the playback operation,click this key once and the playback pointer will point to the next paragraph.Double-click to point to the beginning of the second paragraph after this paragraph.
3.2.During playback,click this button to stop playing the current paragraph and then play the next paragraph.If the current paragraph is the last paragraph,stop playing the last paragraph and play the first paragraph.
The single-segment erasing operation is only valid for the first and last segments.When the playback pointer is in the first or last segment,pressing this key will erase the first or last segment.The playback pointer will jump to the second segment before erasing or the penultimate segment accordingly.Press this button for more than 3 seconds and the chip enters the all-erase operation mode." At the same time,the LED light flashes twice,continue to press this button,the LED flashes 7 times and then goes out.At this time,release the button and the voice information in the chip will be erased.except.
Click this button to execute the reset operation of the chip.After reset,the playback and recording pointers point to the last paragraph,that is,the playback pointer points to the beginning of the last paragraph,and the recording pointer points to the end of the last paragraph.At this time,the last paragraph will be played when the playback is executed,and the last paragraph will be recorded after the last paragraph is executed when the recording is executed.
Click this button to adjust the size of the chip output sound.The default output of the chip is the maximum value of the sound,each click,the sound is attenuated by 4DB.After the sound is the smallest,continue to click this button,and each click will increase the sound by 4DB (Note:After the reset is executed,the sound output is limited to loudness)
7.FT Pass-through Operation:
Short-circuit the FT pin to GND and keep it low continuously to start the pass-through mode.The pass-through operation will direct the voice from the ANALN terminal to the speaker or AUD output.During recording,if you press FT,the incoming voice signal of ANALN will be recorded at the same time.
1pcs ISD1700 Voice Module
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