Audirvana Plus 1.4 播 SACD ISO 有 "DD聲" 問題
MACBOOK AIR 2012 > M2TECH > MYTECH DSD 192 DAC試過將以下圖片sent去 Audirvana 睇下有無辦法解決
但係都係解決唔到
播所有 SACD ISO 都有呢個問題
但係用 Audirvana 播 AIFF / WAV / FLAC 就無問題
http://i24.photobucket.com/albums/c10/westwoodm/20130118_195235_HDR_zpsd391cf5e.jpg
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http://i24.photobucket.com/albums/c10/westwoodm/20130118_195356_HDR_zps020ecf66.jpg 點解唔用usb由Mac直入Mytek? 無錯，hiface 同mytek usb 相差唔大，你咁樣只會增加jitter . I have a similar problem. When Audirvana plays a DSD file, there is a small “click" sound at the beginning of each song.
It is not a big deal as the click sound is generated once.It will be great if such click sound can be eliminated altogether. 我用過pc嘅 jriver 同 foobar2000 play sacd.iso都有呢個問題
就算依家用咗linux play dsd, 揀歌跳track 時都有細細聲"達"一聲。 chhanthony 發表於 2013-1-21 17:06 static/image/common/back.gif
點解唔用usb由Mac直入Mytek?
師兄
因為我本身有個外置鐘 (唔係廠鐘)
要夾個摩左M2TECH用
無辦法 bb1668 發表於 2013-1-22 00:07 static/image/common/back.gif
I have a similar problem. When Audirvana plays a DSD file, there is a small “click" sound at the...
無辦法
決定都係將D SACD ISO 檔移至 Scarletbook 分軌
再用 KORG AudioGate 轉為 AIFF
聽講唔好轉為 24/192
轉為 24/88 音色會好D
搵日得閒試下先
{:6_183:} 本帖最後由 chhanthony 於 2013-1-22 10:44 編輯
丁蟹 發表於 2013-1-22 10:05 static/image/common/back.gif
師兄
因為我本身有個外置鐘 (唔係廠鐘)
要夾個摩左M2TECH用
丁蟹兄
可以參考一下Mytek個designer Michal喺Computer Audiophile Forum回覆我有關加所置時鐘嘅問題。
http://www.computeraudiophile.com/f6-dac-digital-analog-conversion/mytek-stereo-192-a-5555/index96.html#post190713
Dear Michal
I am a Mytek user from Hong Kong, I just want to confirm whether I can use an External Clock to generate the clock signal to Mytek when playback DSD format under DoP standard, the set up like follows:-
Notebook (foobar2K DoP1.0)>>USB>>DDC>>AES/spdif>>Mytek<<BNC<<External Clock(set 176.4khz)
Thank you very much.
Sure, you can , butt the Q is why would you want to use setup like this? It looks like it would not allow change of sampling rates/formats.
I recommend staying with USB or FW clocked to Mytek internal clock. No external clock can beat jitter specifications of our 10ps master clock connecting to DAC with a 1/2" long trace. I would not try to fix something that isn't broken.
Regards, Michal at Mytek New York
而我之前寫有關Mytek同Benchmark嘅文章時亦有帶出到底應否加外置時鐘問題。
http://chhanthony.blogspot.hk/2012/12/mytek-stereo-192-dsd-vs-benchmark-dac2.html
幸好在得到一位網友Kenneth兄的提點，提醒Anthony就算加了一部好準確的外置時鐘，但當clock signal transfer時亦會因外間因素而產生jitter，而要減少喺transfer過程中所產生的jitter，靚電源線，靚鐘線及靚墊材缺一不可，這個投資會很大，同時亦不能確保clock signal到達Mytek時的jitter會比Mytek內部Master Clock的jitter還少。...................................................Anthony已忘了外置時鐘的基本功用，它本來就是用來將CD轉盤及解碼器同步的工具，是為了減少因digital transfer時所產生的jitter所生存，但既然手上兩部解碼器行usb input時已經是行async模式，為何還要大費周章去加外置時鐘呢，看來玩CAS的話加鐘是不必，還可以說是多餘了。
我嘅見解係貢:
word clock作用除咗用嚟將CDT同DAC同步外，亦同時可以提升兩部機內本身嘅準確準，金鹿嘅OCX佢嘅最少誤差為0.02 ps而Mytek個內置時鐘只係聲稱為<20ps，喺規格上OCX的誤差遠比Mytek少，而當玩CAS時如果用usb行async模式，咁外置鐘用嚟同步嘅功能就變成不必要，剩低嘅功用就係為DAC提供一個更準確嘅時脈。
不過我嘅理解係當clock signal傳送時亦會因外間因素而產生jitter，當中包括電源、BNC線、機嘅震盪等等，要處理呢方面問題所做嘅功夫唔少，如釘墊，純銀線材等等。
問題係無論工夫做到幾足，jitter都係會產生，差別在於就算"外來的時脈"喺傳送時產生咗jitter，但到達DAC時"外來時脈"都重係會準過DAC所產生嘅"內置時脈"，以Mytek同OCX嚟比喻即係 0.02 ps + ? vs >20 ps，呢個係不明朗嘅因素，相信只有量度呢類數據嘅儀器先可以找到答案。
丁蟹 發表於 2013-1-22 10:09 static/image/common/back.gif
無辦法
決定都係將D SACD ISO 檔移至 Scarletbook 分軌
再用 KORG AudioGate 轉為 AIFF
"DD"聲係播放中途有? chhanthony 發表於 2013-1-22 10:39 static/image/common/back.gif
丁蟹兄
可以參考一下Mytek個designer Michal喺Computer Audiophile Forum回覆我有關加所置時鐘嘅問題。
最重要A/B比較過
加左真係好聲左好多好多
無錯投資係大左
無論係線材及釘墊
不過都值得效果非常明顯