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During a test, I converted several tracks from APE to MPC, MP3, and AAC with dbPowerAmp Music Converter.
The encoding settings for MP3 is 256kbps VBR, MPC is insane, and AAC is ultra. Then, I opened Foobar 2000 and its spectrum analysis visual plugin, and compared the spectrum of the orginal APE, and the encoded MPC, MP3, AAC.
The size of the encoded files are very close. Within the spectrum plugin, during the playback, I found that MPC and MP3 had a frequency-cut-off at about 19kHz, however, AAC's seemed to be preserved up to 20kHz and above.
I increased the bit-rate assigned to the encoder, MPC using braindead profile, MP3 using 320kbps CBR. The spectrum of MPC goes a little closer to AAC and APE's, and MP3's are a little better. Yet, the file size of MPC and MP3 are somewhat bigger than AAC's.
Actually, few people might notice the difference above 19kHz. Yet, the analysis with spectrum appears that AAC using a limited bit-rates is preserving better original signals.
The uncomforatble thing about the AAC (CLI) encoder plugin of dbPowerAmp is that it appears to have an intensive disk IO at the beginning of the conversion which frightens me about the health of my hard drive....
The encoding settings for MP3 is 256kbps VBR, MPC is insane, and AAC is ultra. Then, I opened Foobar 2000 and its spectrum analysis visual plugin, and compared the spectrum of the orginal APE, and the encoded MPC, MP3, AAC.
The size of the encoded files are very close. Within the spectrum plugin, during the playback, I found that MPC and MP3 had a frequency-cut-off at about 19kHz, however, AAC's seemed to be preserved up to 20kHz and above.
I increased the bit-rate assigned to the encoder, MPC using braindead profile, MP3 using 320kbps CBR. The spectrum of MPC goes a little closer to AAC and APE's, and MP3's are a little better. Yet, the file size of MPC and MP3 are somewhat bigger than AAC's.
Actually, few people might notice the difference above 19kHz. Yet, the analysis with spectrum appears that AAC using a limited bit-rates is preserving better original signals.
The uncomforatble thing about the AAC (CLI) encoder plugin of dbPowerAmp is that it appears to have an intensive disk IO at the beginning of the conversion which frightens me about the health of my hard drive....
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