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  • kolosanyi

    veterán

    válasz Dare2Live #45 üzenetére

    Sose értettem ezt a "jó a lejátszó, mert van benne EQ" (vagy éppen a rossz, mert nincs) hozzáállást.

    Egyébként egy kis extra info a zenei dolgokról (forrás xda fórum):
    http://www.omappedia.org/wiki/Audio_Drive_Arch

    The Phoenix codec in OMAP4 is the analog part of the audio architecture. It consists of the following components:

    Audio output:
    Headset
    Handsfree
    Vibrator
    Auxiliary
    Earphone

    Audio input:
    Mic left input (Can be Main mic, HS mic or AUX/FM left input)
    Mic Right input (Can be Sub mic, HS mic or AUX/FM right input)
    Line In

    The Phoenix codec renders samples at 88.4 KHz and 96 KHz. Handsfree speakers and other paths can only work at 96 KHz, but heaphones has two modes of operation:

    Low power mode (88.4 KHz and 96 KHz). Consumes less power but the audio quality may be affected.
    High performance mode (96 KHz only). Good for applications in which quality of audio is desired.

    There are eight digital input channels on the Phoenix that can be used for rendering audio out to nine different analog outputs. There are 5 McPDM channels (DL0 -> DL4), an I2C channel, and two auxiliary inputs that can be used for the FM radio (AFM0, AFM1).

    És még egy kis kiegészítés:

    I found this datasheet for the TWL6040: http://www.alldatasheet.com/datashee...1/TWL6040.html
    It looks pretty good actually, 100dBa SNR for the DAC, charge pump-driven capless headphone amp delivering 20mW, these are all exactly the same as the Wolfson WM8994. THD for the TWL6040 actually looks better than the WM8994, but TI and Wolfson measures that differently in their datasheets so I can't tell for sure. Should be interesting to find out how this actually performs, I can't find any info on a device that uses this codec, maybe the Galaxy Nexus is the first.

    [ Szerkesztve ]

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