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Audio Compensation Filter Tuning Guide for tier-1
MTK Confidential B (密)
Audio Compensation Filter Tuning Guide
for Tier-1
Copyright ? MediaTek Inc. All rights reserved.
SA/ Raden
WCT/SD/SP2 Wn
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Internal UseMTK Confidential B (密)
Outline
? Audio Compensation Filter (FIR part)
Tuning Guide
? Audio Compensation Filter (IIR part)
Tuning Guide
2010/8/24Copyright ? MediaTek Inc. All rights reserved. 1
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Internal UseMTK Confidential B (密)
MTK音效支持 by platform
BesLoudness ACF(IIR) BesEQ ACF(FIR)
MT6223 N/A N/A v (只能選其一)
MT6225 v v v (只能選其一)
MT6235 v v v v
MT6236 v v v v
2010/8/24Copyright ? MediaTek Inc. All rights reserved. 2
MT6238 v v v v
MT6239 v v v v
MT6253 v v v (只能選其一)
MT6268 v v v v
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Internal UseMTK Confidential B (密)
Data Flow
2010/8/24Copyright ? MediaTek Inc. All rights reserved. 3
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MTK Confidential B (密)
Audio Compensation Filter (FIR part)
Tuning Guide
Copyright ? MediaTek Inc. All rights reserved.
WCT/SD/SP2
Wn Chen
2010/08/11
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Internal UseMTK Confidential B (密)
Pre-Setting for Audio Compensation Filter
? Support Platform
? MT6223/25/35/36/38/39/53/68
? Compile Option:
? AUDIO_COMPENSATION_ENABLE = TRUE
? 若有更動, 需要重新release code
? META請更新至 meta6.1032.0 or later version
2010/8/24 5
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Internal UseMTK Confidential B (密)
FIR tuning, META請更新至meta6.1032.0
Input到手機的參數
4.有檔案正在撥放的時候,
可以runtime改變參數
套用於: 喇叭, 耳機,
鈴聲(From 09BW1020)
2.調整客戶想要的曲線
(range -15~+15)
5.將產生好的coefficient,
寫成C檔
2010/8/24Copyright ? MediaTek Inc. All rights reserved. 6
Bl
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