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Re: 產品發表會語音問題
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版主
 
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可以是可以，但APP020並沒有DAC的設計，但可以參考 dsPICDEM v1.1 的電路來加入CODEC (使用SPI介面)
發表於: 2006/6/2 10:01
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Re: 產品發表會語音問題
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中級會員
 
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APP009實驗板,APP020實驗板或APP023實驗板是否可取代dsPICDEM v1.1 用來使用於 (放音) 的Demo Board
請告知 謝謝 tuming
發表於: 2006/5/30 22:06
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Re: 產品發表會語音問題
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版主
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1. Demo Board 可以使用 dsPICDEM v1.1 的版子，上面有一個 Si-3000 Audio Codec , 語音壓縮時需19MIPS, 解碼時需 3MIPS。播放一秒需8K Bytes
2. 目前該版姿勢使用dsPIC30F6014 3. PC 的錄音程式Microchip提供，LIB可以向Microchip的網站直接購買，料號為 SW300070/EVAL ，很便宜的。 底下是該LIB的主要規格: Key features of the Speech Encoding/Decoding Library include: • Fixed 8 kHz sample rate • Fixed 8 kbps output rate • PESQ-based Mean Opinion Score: 3.7 – 4.2 (out of 5.0) • Code Excited Linear Prediction (CELP)-based coding • Two analog input interfaces – codec or on-chip 12-bit ADC • Two analog output interfaces – codec or on-chip PWM • Optional voice activity detection • Playback-only applications benefit from the Speech Encoder utility; encoded speech files can be created from the desktop using a PC microphone or WAV file • Storing compressed speech requires 1 KB of memory per second of speech • Off-chip support for playback of long speech samples • Royalty free (only one-time license fee) • Full compliance with Microchip MPLAB® C30 Language Tools • dsPIC DSC Speech Encoding/Decoding Library User’s Guide assists in using the library (DS70154) • Designed to run on dsPICDEM™ 1.1 General Purpose Development Board (DM300014)
發表於: 2006/5/29 15:43
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產品發表會語音問題
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中級會員
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產品發表會後對語音錄音及播放有相關問題
1.由PC錄音後,由dSPIC的CPU播音,這樣的話我需要買何種DEMOBOARD,及使用何種相關CPU. 2.由CPU錄音,編輯,播音,需要買何種DEMOBOARD,及使用何種相關CPU. 3.有無相關語音方面的程式(demo program或LIB),如何取得 謝謝 感謝您
發表於: 2006/5/25 21:33
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