標題: 有關 xfi titanium 在 foobar 上設定 resampler 的問題 [打印本頁]

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作者: joeyung714    時間: 2008-10-19 02:54     標題: 有關 xfi titanium 在 foobar 上設定 resampler 的問題

suppose 現有一個 sample rate 係 44.1khz 既 source
在 foobar 上用 asio driver
想最後在 sound card 上用 96khz 出

driver 有一個功能叫 Bit-Matched Playback
ENABLE
硬體不會作出任何 resample 動作 (input sample rate = sample output rate)
DISABLE
input sample rate 會自動硬體 upsample/downsample 去所指定既 output sampe rate

宜家有 3 個 combination (driver 既 output sample rate 都係設定成 96khz):

1. 在 foobar 上用 srs/ssrs/pphs resample 去 96 khz,, ENABLE Bit-Matched Playback
(44.1 --- software src ---> 96 --- Bit-Matched --->96)

2. 在 foobar 上不用任何 resampler (input sr = 44.1khz),  DISABLE Bit-Matched Playback
(44.1 --- hardware src ---> 96)

3. 在 foobar 上用 srs/ssrs/pphs resample 去 96 khz,, DISABLE Bit-Matched Playback
(44.1 --- sodtware src --->96 --- bypass/hardware src? --->96)

以上 3 個選擇, 邊個效果會係最好 ?

[ 本帖最後由 joeyung714 於 2008-10-19 02:59 編輯 ]

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作者: powershing    時間: 2008-10-19 10:54

其實要用srs/ssrs/pphs resample,
set 48khz就ok,
再上無咩意思.

聽吾出有分別就吾開resample

音源不是96khz,你set 96khz resample無咩意思....

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作者: joeyung714    時間: 2008-10-19 11:21


upsample 唔係冇意思的
hi-end 既 amp 都有 upsample 功能
http://www.dcsltd.co.uk/page/myths#upsampling

upsample 會在原 signal 中插入更多 signal
所以 upsample 左既音訊會多左一 d 原本冇既野
雖然, 多左 野 = 唔係原音質
但係, 唔係原音質唔等於會比原音質差
肯定既係 upsample 後仍保留了原本既資訊

我覺得 resample 後既音訊既好壞取決於個 algor
resample 做得好既話, 會適當加插取樣資料
雖然同原本已經唔同左, 但係有可能令音樂更好聽

[ 本帖最後由 joeyung714 於 2008-10-19 18:53 編輯 ]

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作者: joeyung714    時間: 2008-10-19 18:41

問題係 upsample 既話,
X-FI srs/ssrc/pphs/src 邊個做升頻最好 ?

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作者: ok102006    時間: 2008-10-19 18:45

tyr DCS

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作者: joeyung714    時間: 2008-10-19 18:52

hi-end.....

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作者: joeyung714    時間: 2008-10-19 21:47

只知道 EMU20K1 在 44.1 -> 48,
hardware src 比不上 software src...

http://myhard.yesky.com/soundcard/306/2074806.shtml

[ 本帖最後由 joeyung714 於 2008-10-19 21:54 編輯 ]

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作者: POKeDOLL    時間: 2008-10-19 22:19

用cplay就可以用佢既software  resample
foobar就算數
soundcard.....Lynn果d hardware upsample先係非常好
其他就唔清楚

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作者: Poljot    時間: 2008-10-19 23:14

it depends on the source file(s) quality(recording, mixing, mastering etc).
if the source is no good, then upsampling become...

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作者: joeyung714    時間: 2008-10-19 23:43


mp3, wav, cd are usually 44.1khz

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作者: Poljot    時間: 2008-10-19 23:50



no.
you misunderstood my point of view.

try finding a "good" HK pop song in wav, flac, etc e.g "Twin", "Yumiko" ...whatever...and see what happen after upsampling.

if you feel good, then congrads. you dont need to upgrade anything; the upsampler is work.

however, in my own opinion, good recording clip after unsampling have a big difference/improvment, bad recording clip is usually not.

just my 2cents.

[ 本帖最後由 Poljot 於 2008-10-19 23:57 編輯 ]

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作者: joeyung714    時間: 2008-10-20 00:06

你真的試過 upsample 過佢地 d music ?
你意思係咪 "upsample 後, 會多左佢地唱得唔好聽既細節"  ???

你想講既係 upsample 會多左 detail ?
不過會"好既更好, 唔好既就更唔好" ???

你試過 upsample 後, 唱得難聽既, 可以更清楚聽到佢地唱得點樣難聽 ???
係既話, 都可能証明到 upsample 係有佢既用處 ~

如果係可以聽多左 detail 又不防一試 upsample wor
我聽 band sound 多 ~

[ 本帖最後由 joeyung714 於 2008-10-20 00:14 編輯 ]

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作者: Poljot    時間: 2008-10-20 00:14



it depends, no definite answer.

yes i used to try both hard/software upsampler.
but i admitt that different people have different feeling, so trust you ear.
infact, you may try EQ (both hard/software) to optimize you music enjoying.

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作者: joeyung714    時間: 2008-10-20 00:24



then,  wt's your feeling about upsampling?
what equipments are used for your tests ?
what file formats have you tried?
what sample comversions have u tried ?
which give u better result (more details / clear sound / etc)?

Actually, I prefer some scienctific  evidience ~

[ 本帖最後由 joeyung714 於 2008-10-20 00:28 編輯 ]

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作者: Poljot    時間: 2008-10-20 00:40



CDP : CA 840C (with upsampling) 192K
Int. amp : McIntosh MA6900
speakers : JBL 4312B

software : foobar2000 0.9.5.6 with SSRC 192K
sound card : EMU 1212M PCI
int. amp and speakers same as above

CD : Mahler - Bernstein Symphone no.2, 5 and 8 with New York Philharmonic
         Enigma - A posteriori (new age band)
         unforgot "Twins" CD.
         and some others i also unforgot.

anything you need to know further?

[ 本帖最後由 Poljot 於 2008-10-20 00:47 編輯 ]

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作者: joeyung714    時間: 2008-10-20 00:45


your feeling and result ~

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作者: Poljot    時間: 2008-10-20 00:48



i have a pair of "wood ear".
so i cannot say much.

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作者: joeyung714    時間: 2008-10-20 00:49


HA ~

[ 本帖最後由 joeyung714 於 2008-10-20 00:51 編輯 ]

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作者: joeyung714    時間: 2008-10-20 00:53

EMU 1212M PCI 可唔可以 set 用佢個 src 做 resample 做 192 ?
唔用 foobar 個 ssrc, 唔知會點呢 ?

pc 要用 eac rip cd 做 wav, 做埋 accurate rip 比對先準確 ~
用埋 ssd hard disk 仲正...

[ 本帖最後由 joeyung714 於 2008-10-20 00:56 編輯 ]

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作者: powershing    時間: 2008-10-20 07:26



我想講foobar set左佢係聽吾出有咩分別,
又用左d cpu資源....
foobar應該無hi-end 既 amp upsample 的效果.....

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作者: joeyung714    時間: 2008-10-20 21:22


How about the X-FI Titanium hardware src ?

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作者: chow0198    時間: 2008-10-21 01:23



又是hi-end...
用x-fi做upsampling 唔錯wo...

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作者: powershing    時間: 2008-10-21 18:43


未用過吾知,不過你自己試下啦