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RMAA 4.3²âÊÔ±ê×¼£º
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Frequency
response£¨ÆµÂÊÏìÓ¦£¬µ¥Î»dB£¬Ô½±Æ½ü0dBÔ½ºÃ£©
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Noise level£¨ÔëÉù¼¶±ð£¬µ¥Î»dB£¬·Ö±´ÊýÔ½µÍÔ½ºÃ£©
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Dynamic
range£¨¶¯Ì¬·¶Î§£¬µ¥Î»dB£¬·Ö±´ÊýÔ½¸ß¶¯Ì¬·¶Î§Ô½´ó£©
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THD£¨×Üг²¨Ê§Õ棬µ¥Î»%£¬Ô½Ð¡Ô½ºÃ£©
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IMD£¨»¥µ÷Ê§Õæ£¬µ¥Î»%£¬Ô½Ð¡Ô½ºÃ£©
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Stereo crosstalk£¨Á¢ÌåÉù·ÖÀë¶È£¬µ¥Î»dB£¬·Ö±´ÊýÔ½µÍÔ½ºÃ£©
Summary
| Frequency response (from 40 Hz to 15 kHz), dB: |
+0.04, -0.05 |
Excellent |
| Noise level, dB (A): |
-86.6 |
Good |
| Dynamic range, dB (A): |
83.8 |
Good |
| THD, %: |
0.0056 |
Very good |
| IMD, %: |
0.030 |
Good |
| Stereo crosstalk, dB: |
-80.6 |
Very good |
General performance: Very good
ÕâÊÇ×ÜÆÀ£¬Ð¡±à·¢ÏÖÕâ¸ö²âÊÔ½á¹û±ÈÏÈǰµÄSQ710»¹ÒªÓÅÐ㣬ÕâÍêÈ«µÃÒæÓÚËùÓõÄCODECÆ·ÖÊÓÅÁ¼£¬ADCºÍDAC²¿·ÖûÓÐÃ÷ÏÔµÄȱÏÝ¡£Í¬Ê±£¬ÕâÒ²ÊÇС±à¼ûµ½°ÙÔªÉù¿¨ÖУ¬ÒôÖÊ×îºÃµÄÒ»¿éÉù¿¨£¬¿°³Æ°ÙÔªÉù¿¨Öе﫯·£¡ Frequency response
| Frequency range |
Response |
| From 20 Hz to 20 kHz, dB |
-0.41, +0.09 |
| From 40 Hz to 15 kHz, dB |
-0.05, +0.04 |
¡¡ ƵÏìÇúÏßÒ²·Ç³£ÓÅÐ㣬ֻÊÇÔÚ½Ó½ü20KHzµÄʱºòÓÐËùË¥¼õ£¬¼´Ê¹ÓÃÁϲ»¼°°ÁÍõÏÈÇ°ÍÆ³öµÄMX300UºÍSQ710£¬µ«ÈÔÈ»ÓÐÈç´Ë¸ßµÄËØÖÊ£¬°ÁÍõ³öÉ«µÄPCBÉè¼Æ²¼ÏßÄÜÁ¦¹¦²»¿Éû£¡ Noise level
| Parameter |
Left |
Right |
| RMS power, dB: |
-82.9 |
-82.8 |
| RMS power (A-weighted), dB: |
-86.4 |
-86.6 |
| Peak level, dB FS: |
-70.3 |
-70.4 |
| DC offset, %: |
-0.00 |
-0.00 |
µ×ÔëˮƽҲ¿ÉȦ¿Éµã£¬×ÜÌå-86.6µÄË®×¼ÔÚÕâ¼ÛλµÄÉù¿¨ÉϷdz£Í»³ö£¬Ö»±È°ÁÍõÏÈÇ°ÍÆ³öµÄMX300UÉԲÊܶ¨Î»¼Û¸ñÖÆÔ¼²»ÄÜÓøüºÃµÄÔªÆ÷¼þ£¬·ñÔò³¬¹ý90Ò²²»ÊÇÄÑÊ¡£ Dynamic range
| Parameter |
Left |
Right |
| Dynamic range, dB: |
+76.9 |
+77.2 |
| Dynamic range (A-weighted), dB: |
+83.8 |
+84.0 |
| DC offset, %: |
-0.00 |
-0.00 |
¶¯Ì¬·¶Î§ THD + Noise (at -3 dB FS)
| Parameter |
Left |
Right |
| THD, %: |
0.006 |
0.006 |
| THD + Noise, %: |
0.016 |
0.015 |
| THD + Noise (A-weighted), %: |
0.013 |
0.013 |
г²¨Ê§Õæ Intermodulation distortion
| Parameter |
Left |
Right |
| IMD + Noise, %: |
0.031 |
0.030 |
| IMD + Noise (A-weighted), %: |
0.023 |
0.022 |
»¥µ÷Ê§Õæ Stereo crosstalk
| Parameter |
L <- R |
L -> R |
| Crosstalk at 100 Hz, dB: |
-73 |
-77 |
| Crosstalk at 1 kHz, dB: |
-80 |
-78 |
| Crosstalk at 10 kHz, dB: |
-75 |
-75 |
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