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Use default buffer size. I have the same problem if you adjust the buffer size too big or small. Which software you are using at the moment ?  The problems come from the configuration of WIndow. That is why I use Mac for CAS.....
唔做死硬派,泥頭,奶頭,菜頭都玩.....

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引用:
原帖由 amhlee 於 2011-1-30 Sun 20:39 發表
Use default buffer size. I have the same problem if you adjust the buffer size too big or small. Which software you are using at the moment ?  The problems come from the configuration of WIndow. That  ...
I cannot remember which the default buffer settings were.  Could you advise me on the default setting ?
I have tried Window media player, Media Jukebox and foobar2000 and had the same result.
Besides, I am not able to configure the control panel!  It is disabled too!
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There is a eUSB control panel on your desktop, use that one instead. Beside, try to use ASIO or WASPI

http://www.asio4all.com/
http://www.foobar2000.org/components/view/foo_out_wasapi

Window 好貴麻煩,有時張 sound card 都影響,您係 XP 定 Win 7 定 Vista ? Vista 就算吧,唱唔到。

[ 本帖最後由 amhlee 於 2011-1-30 Sun 21:05 編輯 ]
唔做死硬派,泥頭,奶頭,菜頭都玩.....

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Default 係 streaming  16ms 和  ASIO : 32ms....
唔做死硬派,泥頭,奶頭,菜頭都玩.....

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引用:
原帖由 amhlee 於 2011-1-30 Sun 21:01 發表
There is a eUSB control panel on your desktop, use that one instead. Beside, try to use ASIO or WASPI

http://www.asio4all.com/
http://www.foobar2000.org/components/view/foo_out_wasapi

Window 好 ...
我用 XP 的, 原本有 SoundBlaster Audigy 2, 我已intall asio4all, 但唔知係邊先可以call出來?
另外, 可否告知 default buffer 是多少, 我現在用的如下圖.
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XP 麻煩好多,可能背境有D thread 要 kill, 最好用 window 7....

Foobar output device 加左 ASIO driver 未?

[ 本帖最後由 amhlee 於 2011-1-30 Sun 21:19 編輯 ]
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那麼可能要接機了 , 再試試吧!

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regarding i2s @192kHz sample rate, i didn't have used the ad1955 but after a quick look on the datasheet, different sample rate should set the corresponding dac control register to set the internal oversampling ratio (8x, 4x and 2x), for 44k1 and 48k, it should be set to 8x, for 88k2 and 96k, it should be set to 4x and 2x for 176k4 and 192k. if i understand the datesheet correctly, every sample rate change, the control register must be set accordingly.

since i'm not sure how the original firmware of the 1955pro is implemented, it might be a mismatch of the internal state of the sampling ratio, for example if the internal oversampling ratio has been set to 8x (for 44k1 and 48k) and if you feed a data stream of 96k and 192k, the internal oversampling filter might refuse to work........

apart from this, the output level of the i2s on the usb interface is at 3.3V (LVTTL), again i have no experience using the 26c31 422 line driver, so a level mismatch is also possible.

the output of the i2s output is of no problem driving bare cable of a few inches directly, i have just hook up the output to my test platform which is a 4399 dac.



btw, if i have use i2s to do "off-unit" transmission, i'm using LVDS instead of using rs422.

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you can't set specific sampling on windows XP, however, if your front end application (e.g. foobar2000) is capable to talk to a ASIO interface, then sample rate change is possible and native.

for example, if you are going to play different sample rate file in a sequence like 44k1, 44k1, 96k, 192k, 96k....... foobar will try to talk to the ASIO driver and try to change the sample rate accordingly.

playing a 384k file in foobar and you can monitor the reported sample rate from the usb audio crontrol panel,





when you change the file to a, say, dxd (352k8) file, the sample rate will change automatically,




remember, this will only be possible using ASIO otherwise, the audio output stream will be resampled by windows kmixer.


for windows 7 user, if you open the control panel and sound option, you can the following list from the properties window,




please noted that, the list didn't show 88k2, 176k4 (and of coz 352k8 and 384k) @ 24 bit, this is a windows problem but it does not affect application that use ASIO, so you can simply ignore this.

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D!! sound is good and ok!!
44.1kHz / 192KHz locked is very good sound
I use the macbook and choose the sound output to exD usb audio............



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I play sound file by "Decibel" version 1.0b(11).
iTunes can't output 24/192 file, that file will be convert to 16/44.1 to output.
What kind of the "RipCD" software (iTunes,CDriper,EAC...............) is the best for ripping, and what kind of music file is best for CAS(aiff, flac, wav...................)

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回覆 1# amhlee 的帖子

已收到 email,唔該哂 Anthony 兄!

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Still not rec'd the driver, kindly please resend.

Thanks.

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用 Gmail 的朋友,請 PM 另一個 mail 給我!
唔做死硬派,泥頭,奶頭,菜頭都玩.....

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引用:
原帖由 rooster 於 2011-1-31 Mon 00:39 發表
I play sound file by "Decibel" version 1.0b(11).
iTunes can't output 24/192 file, that file will be convert to 16/44.1 to output.
What kind of the "RipCD" software (iTunes,CDriper,EAC............... ...
Itune should be able to export 24/192K.....
Use Ayrewave, you should be able to get 24/192K file to with automatic selection for proper sampling embedded with the file. I found it is better than the itune in term of sound quality.
For Ripping, I am still using itune for quick but make sure you select " error correction" on itune import preferences.....
Some Window user like to use EAC but take almost half an hour to rip a CD. I just give up....
I am using AIFF as it is best for Mac which the album art can be embedded into the file. AIFF is not a compressed file.

[ 本帖最後由 amhlee 於 2011-1-31 Mon 10:08 編輯 ]
唔做死硬派,泥頭,奶頭,菜頭都玩.....

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今天用舊notebook 試, 一樣出現問題. 後來將file直接抄落hardisk再試, Bingo, 問題解決了!

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原來 file 放在那裡?
唔做死硬派,泥頭,奶頭,菜頭都玩.....

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原本放在 network or USB 手指.

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唔做死硬派,泥頭,奶頭,菜頭都玩.....

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原來有個ching同我一間公司, 今日相識了 , 仲即時過o左兩招比我,  i2s攪好了
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引用:
原帖由 foxfire 於 2011-2-1 Tue 00:42 發表
71069
原來有個ching同我一間公司, 今日相識了 , 仲即時過o左兩招比我,  i2s攪好了
恭喜foxfire兄攪掂左個I2S! 幾百萬人之中都可以相遇,仲要返同一個office,真係有緣

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引用:
原帖由 foxfire 於 2011-2-1 Tue 00:42 發表
71069
原來有個ching同我一間公司, 今日相識了 , 仲即時過o左兩招比我,  i2s攪好了
恭喜恭喜! 聲音如何, 有何改變?

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引用:
原帖由 andyp 於 2011-2-1 Tue 09:02 發表

恭喜foxfire兄攪掂左個I2S! 幾百萬人之中都可以相遇,仲要返同一個office,真係有緣
麻煩二位c兄分享下試音心得

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引用:
原帖由 amhlee 於 2011-1-29 Sat 19:03 發表
須要呢件,不過只係一半
Anthony hing, shall i need this broad to connect notebook (has S/PDIF output) between 1955pro?

[ 本帖最後由 cvincent 於 2011-2-1 Tue 10:20 編輯 ]

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呢過係 I2s 用
唔做死硬派,泥頭,奶頭,菜頭都玩.....

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引用:
原帖由 casshan 於 2011-2-1 Tue 10:08 發表

麻煩二位c兄分享下試音心得
casshan兄,只有foxfire兄攪掂左,我未得閒攪啊

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引用:
原帖由 andyp 於 2011-2-1 Tue 13:33 發表

casshan兄,只有foxfire兄攪掂左,我未得閒攪啊
andyp兄, 快d出手玩啦
其實我都係求其駁埋玩下先, 用windows xp + foobar, 之前都未玩過upsampling, 用內置resampler上96k, 感覺上播出黎d歌密度高o左, 不過又唔係咁耐聽,
我本身無192k歌, 上網download o左d sample 黎聽, 真係幾好聲wor
好好玩, 唔該晒版大同mdlover~

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24/192 有機會接近盤的聲,唔錯,可惜原生 192K 的 file 唔多。
唔做死硬派,泥頭,奶頭,菜頭都玩.....

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哈哈!裝了箱
連I2S都裝好了
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恭喜!  金工手工真不錯 !

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