MP3 Listening Test at 128 kbps
Reply #354 – 2008-10-15 22:44:23
Here is the updated bitrate table that also contains the encoding speeds (except for iTunes that has to be tested once the fixed version is out). I didn't want to redo all tests on the single-core machine and comparing iTunes' single-core results to the dual-core results of the other encoders is not fair (at least if any of the other encoders makes use of multi-threading). Sample 1 Sample 2 Sample 3 Sample 4 Sample 5 Sample 6 Sample 7 Sample 8 Sample 9 Sample 10 Sample 11 Sample 12 Sample 13 Sample 14 Max Min Avg Speed 1) ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- LAME 3.97 | 97 126 138 149 146 150 95 147 109 158 149 194 133 159 194 95 139 18x LAME 3.98.2 | 107 149 143 140 138 143 109 136 118 152 145 214 146 156 214 107 143 27x FhG | 119 121 139 140 144 149 134 128 129 147 134 212 151 163 212 119 144 45x iTunes | 118 117 139 145 133 125 141 120 126 148 151 192 159 158 192 117 141 N/A 2) Helix | 114 110 126 151 149 151 131 138 97 152 117 228 143 173 228 97 141 90x Low Anchor | 128 128 128 128 128 128 128 128 128 128 128 128 128 128 128 128 128 1,63x ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- Max | 119 149 143 151 149 151 141 147 129 158 151 228 159 173 Min | 97 110 126 140 133 125 95 120 97 147 117 192 133 156 Avg | 111 125 137 145 142 144 122 134 116 151 139 208 146 162 142 Max - Min | 22 39 17 11 16 26 46 27 32 11 34 36 26 17 1) These results are only an approximate value and were obtained on a dual-core Intel E6550 with 2 GB RAM running on Windows Vista SP1 32-bit 2) Encoding speed will be measured with iTunes once the bug-fixed version was released. The buggy version encoded at 18x but produced lower bitrates. Edit 1: IMPORTANT: Please notice that the low anchor wasn't taken into consideration for building the min, max, delta and average bitrates. Edit 2: Sorry for breaking the layout - I used a codebox so I don't exactly know what is going wrong here.