AAC 128k

RightMark Audio Analyzer test


Testing chain: conversion WAV->AAC->WAV
Sampling mode: 16-bit, 44 kHz

converted with iTunes v4.5.0.31 AAC 128 kbps, 44.1kHz




Summary

Frequency response (from 40 Hz to 15 kHz), dB: +0.19, -0.46Good
Noise level, dB (A): -114.4Excellent
Dynamic range, dB (A): 91.3Very good
THD, %: 0.0017Excellent
IMD, %: 6.190Very poor
Stereo crosstalk, dB: -112.4Excellent

General performance: Very good




Frequency response

Spectrum graph


Frequency range Response
From 20 Hz to 20 kHz, dB-74.02, +0.48
From 40 Hz to 15 kHz, dB-0.46, +0.19




Noise level

Spectrum graph


Parameter Left Right
RMS power, dB:-113.7-113.9
RMS power (A-weighted), dB:-114.2-114.4
Peak level, dB FS:-90.3-90.3
DC offset, %:0.00-0.00




Dynamic range

Spectrum graph


Parameter Left Right
Dynamic range, dB:+92.0+92.1
Dynamic range (A-weighted), dB:+91.3+91.4
DC offset, %:0.000.00




THD + Noise (at -3 dB FS)

Spectrum graph


Parameter Left Right
THD, %:0.0020.002
THD + Noise, %:1.4061.406
THD + Noise (A-weighted), %:1.5661.566




Intermodulation distortion

Spectrum graph


Parameter Left Right
IMD + Noise, %:6.1906.190
IMD + Noise (A-weighted), %:6.1756.175




Stereo crosstalk

Spectrum graph


Parameter L <- R L -> R
Crosstalk at 100 Hz, dB:-116-116
Crosstalk at 1 kHz, dB:-111-111
Crosstalk at 10 kHz, dB:-108-110

This report was generated by RightMark Audio Analyzer 5.3