p**********t
发帖数: 3680 | 1 现在的蓝牙3.0耳机
比如这个森海的
Sennheiser PX210BT Bluetooth Wireless Collapsible Headphones
或者这个索尼的
http://www.buydig.com/shop/product.aspx?sku=SNDRBTN200BLK
理论上应该是数据传输到耳机，耳机自带DAC解码，然后驱动吧
所以音质因该取决于DAC素质和单元driver的素质，应该不算太差
我有那个索尼的，买了有一年了，有点夹头，不是 around ear， 压在耳朵上时间长有
点闷，估计是所有皮/革面耳机的通病，作为一个无线的玩意儿素质还挺好的。
订了一个森海around ear 的还没到，但布的应该是比革的透气，舒适度好些 |
p**********t
发帖数: 3680 | |
p**********t
发帖数: 3680 | |
d*w
发帖数: 384 | 4 bluetooth audio transmission is lossy compression (there are new lossless
protocols, but I don't think anyone is using them now.)
there must be a DAC on the headphone side, but i doubt it's very high
quality because of the cost and operating voltage.
【在 p**********t 的大作中提到】
: 现在的蓝牙3.0耳机
: 比如这个森海的
: Sennheiser PX210BT Bluetooth Wireless Collapsible Headphones
: 或者这个索尼的
: http://www.buydig.com/shop/product.aspx?sku=SNDRBTN200BLK
: 理论上应该是数据传输到耳机，耳机自带DAC解码，然后驱动吧
: 所以音质因该取决于DAC素质和单元driver的素质，应该不算太差
: 我有那个索尼的，买了有一年了，有点夹头，不是 around ear， 压在耳朵上时间长有
: 点闷，估计是所有皮/革面耳机的通病，作为一个无线的玩意儿素质还挺好的。
: 订了一个森海around ear 的还没到，但布的应该是比革的透气，舒适度好些
|
p**********t
发帖数: 3680 | 5 也就是说，声音传之前压缩了？ 然后到蓝牙耳机再解压？
类似说320KBPS mp3 是降到120k传的？
【在 d*w 的大作中提到】
: bluetooth audio transmission is lossy compression (there are new lossless
: protocols, but I don't think anyone is using them now.)
: there must be a DAC on the headphone side, but i doubt it's very high
: quality because of the cost and operating voltage.
|
d*w
发帖数: 384 | 6 i think, i cannot guarantee it's correct, if you have a 320kpbs MP3 file, it
's decoded to PCM on the host first, then compressed to 120k - 192k using a
codec specified by bluetooth audio and transmitted to the receiver/
headphones.
【在 p**********t 的大作中提到】
: 也就是说，声音传之前压缩了？ 然后到蓝牙耳机再解压？
: 类似说320KBPS mp3 是降到120k传的？
|
p**********t
发帖数: 3680 | |
a***y
发帖数: 19743 | 8 Herman Kardon的BT支持AAC和AptX傳輸格式
雖然效果還是比接線差一點（這個支持BT和接線），但是已經很不錯了
價格refurb只要$90+，而且佩戴很舒服。
【在 d*w 的大作中提到】
: bluetooth audio transmission is lossy compression (there are new lossless
: protocols, but I don't think anyone is using them now.)
: there must be a DAC on the headphone side, but i doubt it's very high
: quality because of the cost and operating voltage.
|
d*w
发帖数: 384 | 9 here comes the expert. questions:
any bluetooth headphones supporting AptX-lossless at this time? if yes, do
current popular hosts (iPhones, iPads, Android phones etc.) support it too?
【在 a***y 的大作中提到】
: Herman Kardon的BT支持AAC和AptX傳輸格式
: 雖然效果還是比接線差一點（這個支持BT和接線），但是已經很不錯了
: 價格refurb只要$90+，而且佩戴很舒服。
|
a***y
发帖数: 19743 | 10 not all Android support AptX, you have to check one by one. It requires
specific BT chips. Most Samsung does.
iPhone/iPad currently only support AAC. Mac computers do support AptX. It is
possible iOS 8 will bring AptX support.
BT headphone supporting AptX.. I only know HK BT. There may be others but
not many. You can check AptX's website they list compatible devices.
BTW, I am not an expert... I just happen to have searched for such devices
recently.
【在 d*w 的大作中提到】
: here comes the expert. questions:
: any bluetooth headphones supporting AptX-lossless at this time? if yes, do
: current popular hosts (iPhones, iPads, Android phones etc.) support it too?
|
d*w
发帖数: 384 | 11 Thanks. I do use a pair of Bluetooth headphones (Jabra Revo Wireless, too
bass heavy) when walking around the room.
is
【在 a***y 的大作中提到】
: not all Android support AptX, you have to check one by one. It requires
: specific BT chips. Most Samsung does.
: iPhone/iPad currently only support AAC. Mac computers do support AptX. It is
: possible iOS 8 will bring AptX support.
: BT headphone supporting AptX.. I only know HK BT. There may be others but
: not many. You can check AptX's website they list compatible devices.
: BTW, I am not an expert... I just happen to have searched for such devices
: recently.
|
