CTA Audio Tuning Experience Share (MTK) CTA Acoustic Tuning Experience Share This section is just a collection of CTA debugging experience. For specific debugging methods, please refer to: ACQUA Acoustic Test presentation MTK SZ HW Test item debugging order: Test item debugging order: CTA test has a total of 7 test items: Two frequency responses: SFR/RFR Four sound levels: SLR/RLR (normal\\max vol.)/STMR One sending distortion: sending distortion The ideal debugging order: Step 1: Two frequency responses (RFR/SFR) Reason: SFR changes will cause SLR/STMR changes RFR changes will cause RLR changes Experience: SFR is easy to pass when the sending FIR is set to full pass (32767). If adjustment is required, the debugging method is similar to RFR, just select TX mode, and debug SFR, please set FIR scale to 1. RFR needs to be adjusted in META (this is the most labor-intensive part of the entire test). Reason: Step 2: Adjust SLR/RLRSD fail will modify SFR, causing SLR/STMR to change. Step 3: STMR is adjusted after SLR is determined. Reason: Step 4: Check sending distortion. STMR will change with SLR. Experience: SD fail can be passed by increasing the sensitivity at 1KHz by pulling up the frequency response of SFR 1KHz. 2 Influence of software settings (ACQUA/META) When exporting EXCEL files from ACQUA, if convert to dB is checked in ACQUA settings, select Log dB in META. If convert to dB is not checked in ACQUA settings, select Linear in META. ACQUA default is not checked, so META is set to Linear3 All-pass RFR curve (influence of volume) Influence of volume) Since the receiving FIR is allpass (32767) at this time, the receiving FIR is received.
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