- 您现在的位置：买卖IC网 > Sheet目录1193 > AC300030 (Microchip Technology)KIT ACOUSTIC ACCESSORY
AEC Demonstration
3.2.2.3
PROGRAM THE dsPIC DSC DEVICE
Use this process to load the AEC demonstration into the dsPIC DSC device on each
board.
1. On your PC, launch MPLAB IDE and open the dsPIC33E EC demo.mcp project
located in the demo folder. For more information on using MPLAB IDE, refer to
the “MPLAB ? IDE User ’s Guide” (DS51025).
2. Import the project hexadecimal file by selecting either:
? File>Import>dsPIC33E EC demo1.hex for board 1 or
? File>Import>dsPIC33E EC demo2.hex for board 2
3. Select Starter Kit on Board as the Programmer, and then select
Programmer>Connect to link to the dsPIC DSC target device on board 1. The
Output window confirms that the target device is ready.
4. Select Programmer>Program . The Output window displays the download
process and indicates that the programming has succeeded.
5. Repeat steps 2 through 4 for the second board.
6. Make sure that the two boards are not located too close to each other to avoid
any acoustic coupling between the two boards.
Note:
3.2.3
After programming each device, unplug and reconnect the USB cable to the
Starter Kit, to ensure that the WM8731 audio codec can be reconfigured.
Demonstration Procedure
After the demonstration application has been programmed into both devices the
application is now ready to run. Use the following procedure to run the demonstration:
1. Using MPLAB IDE, reset and run the program in board 1. Wait until LED1 through
LED3 on board 1 turn ON. Now reset and run the board 2. Wait until LED1 through
LED3 on board 1 and board 2 turn OFF. This indicates that the boards are
synchronized and the demo is running.
Note:
If only one PC is available for running the demo, program board 2.
Disconnect the USB cable from board 2 after programming, and use an
external 9V power supply to reset and run board 2 (after the program in
board 1 is already running).
2. Put on the headset connected to board 2.
3. Begin speaking into the microphone input of the headset. On the speaker output
of the headset, you should be able to hear an echo of your own speech.
4. If desired, have someone simultaneously speak into the microphone connected
to board 1. In this case, you will hear the other person’s speech as well as an
echo of your own speech.
5. Press the switch, SW1, on the dsPIC33E USB Starter Kit. Observe that the LED3
on board 1 turns on, indicating that the AEC algorithm is active.
6. Again, speak into the microphone of the headset. You should no longer hear the
echo of your own speech.
7. To observe acoustic echo cancellation during double talk, let a person
simultaneously speak into the microphone connected to board 1. You will only
hear the other person’s speech, free of the echo of your own speech. You will be
able to experience the difference in ease of conversation by switching the echo
canceller ON and OFF while you and the other person are talking normally.
? 2004-2011 Microchip Technology Inc.
DS70134F-page 29
发布紧急采购，3分钟左右您将得到回复。
相关PDF资料
ACM-16
CABLE MODULE FR3 16BIT 40-DIP
ACM-2X8
ACTIVE CABLE MODULE DUAL 8 BIT
ACM-8
CABLE MODULE FR3 8BIT 28/32-DIP
ACS9510EVB
EVALUATION BOARD FOR ACS9510
ACS9550EVB
EVALUATION BOARD FOR ACS9550
ACS9593EVB
EVALUATION BOARD FOR ACS9593
AD-CCES-CORP-UNL
CORP LICENSE FOR CCES UNLIMITED
AD-UCFS-SPRD
PRD LIC UCFS CORE CCES 1 PROD
相关代理商/技术参数
AC300031
制造商:Microchip Technology Inc 功能描述:ACOUSTIC ACCESSORY KIT SPEECH RECOGNITION - Boxed Product (Development Kits) 制造商:Microchip Technology Inc 功能描述:SPEECH RECOGNIZE KIT ACOUSTIC
AC3000-52
制造商:GE Energy (formerly Lineage Power) 功能描述:Front-End Power Supply 制造商:Lineage Power 功能描述:Front-End Power Supply
AC3000A
制造商:Black Box Corporation 功能描述:HD VIEW TRANSMITTER
AC3000A-R2
制造商:Black Box Corporation 功能描述:HD VIEW TRANSMITTER
AC3000A-R2-W1
制造商:Black Box Corporation 功能描述:1 YEAR WARRANTY FOR AC3000A-R2
AC3000A-R2-W3
制造商:Black Box Corporation 功能描述:3 YEAR WARRANTY FOR AC3000A-R2
AC3000A-W1
制造商:Black Box Corporation 功能描述:1 year warranty for AC3000A
AC3000A-W3
制造商:Black Box Corporation 功能描述:3 year warranty for AC3000A