2016年12月26日 星期一

前AES頭頭Sean Olive談喇叭與耳機

http://www.soundandvision.com/content/15-minutes-harmans-audio-guru-sean-olive#E1DSxMA0uCedWyPM.97

The problem is that the current standard audio specifications for headphones and loudspeakers are almost useless in terms of indicating how good or bad they sound.
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At Harman we can characterize and predict the sound quality of loudspeakers with 86 percent accuracy based on a set of comprehensive anechoic measurements. Our measurements are now the basis for a new ANSI/CEA 2034-A Standard: Method of Measurement of In-Home Loudspeakers so there is hope that eventually these will be adopted as standards for the industry.
pro audio應該會照著標準走,JBL先做,其他家不跟也不行;
家用嘛...哈...沒希望...MBL那葫蘆喇叭貴的要死,照這標準測就爛透啦~
Why?注意到那個in-Home沒?空間效應啊~

Hi-Res Audio won’t gain a broader audience unless it offers demonstrably better sound quality and/or the recordings cost the same as the CD version. Otherwise, why will consumers pay extra for it? While high-resolution audio supports greater bandwidth and dynamic range, that doesn’t guarantee that record producers will use it responsibly and make better sounding recordings. 
你看看人家這位老先覺/業界大咖怎麼說所謂的高解析音樂?真正的麻煩在聆聽者用啥音響聽?聽不出來的東西是有屁用?除非你賣同價格,沒有比較貴。
There is no quality control or meaningful standards that define the performance of loudspeakers and rooms in which they are made and reproduced. A common loudspeaker standard shared by the professional and consumer audio industries would significantly improve the quality of sound
這說法真的怪,音樂人不可能要求聆聽者得用合標準的再生設備聽吧?音樂人也不可能放棄現存佔絕大多數的使用爛音響的顧客群吧?

S&V: What about “immersive” surround-sound formats such as Dolby Atmos, which can deliver a riveting experience with a proper setup? What’s the prognosis for broad adoption?
Olive: For commercial and home cinemas, I agree these immersive formats provide a very compelling experience. For homes, the hurdle will be convincing consumers to purchase and install the required seven to 20-plus loudspeakers and amplifiers in their living room. We’ve not had much success moving many consumers beyond two channels in the past 25 years. In the short term, it’s more likely that consumers will experience these formats scaled and rendered through headphones.
哈~這位仁兄現在任職於Harman Kardon,正巧前陣子看過其財務報表,家用音響生意還比車用小...規格與生意是兩回事,Harman Kardon都認為二聲道仍舊是家用音響主流,搞啥N聲道是有啥意義?

The goal for all Harman audio brands is to produce accurate, neutral sound that doesn’t distort or editorialize what the artist intended. Accuracy can be quantified using subjective and objective measurements. In practice, there are engineering, industrial design and cost constraints that will result in tradeoffs in bass extension, directivity, efficiency, and how loud a speaker will play before distortion.
真人不說假話,直接點明重點!成本!

Given JBL’s professional heritage, we place more emphasis on accuracy, efficiency, and how loud it can play without distortion. For the JBL M2 reference monitor, this is achieved by using a high performance compression driver, woofer, and waveguide optimized to produce a flat, smooth, and extended response. For Infinity loudspeakers, accurate sound is the goal, but there is less emphasis on efficiency and maximum output. JBL-branded automotive audio systems must achieve spectral and dynamic accuracy foremost. For other brands like Mark Levinson and Lexicon, a spatially immersive experience is an important feature achieved in the car through additional loudspeaker channels and Harman technology like Logic 7 and Quantum Logic Surround (QLS).
看到沒?專業的JBL重點在大聲,Infinity就不要求大聲,至於Mark Levinson, Lexicon重點都在車用市場啊~
車五年一換,家用音響一唱二十年...眾音響迷還在買二十年前的Mark Levinson老機器...當然要去做車用音響生意囉~

In my opinion the biggest challenge we face is innovating and adapting quickly enough to remain relevant and competitive in the marketplace. Many audio companies have come and gone over the past decade because they failed to respond to disruptive technologies and changes in how people listen to audio. Audio systems have become digital, portable, highly integrated, and increasingly are connected to the Cloud through music subscription services. The user experience is becoming become extremely important, and companies need to think beyond a remote control. 
說的好啊~你還在搞啥?六十年前的招數?
我一點也不想回到貼膠帶救錄音帶的時代...
We’ve conducted controlled double-blind listening tests on hundreds of people—both naïve and trained listeners—from different cultures and age groups. From this we identified a headphone target response that most listeners prefer regardless of age, culture, or training. The preferred headphone has a response that matches the response of an accurate loudspeaker measured in our reference listening room. This seems logical given that most music recordings are optimized through loudspeakers in a room.

這也很妙啊~
竊以為很多PA場子也是如此,明明就是戶外,低頻卻搞的像是室內有駐波一般...制約反應啊...

Virtual reality is finally becoming a reality. Audio will play a huge role in how successful the technology will play out. The more accurate and personalized the audio rendering is, the more realistic and immersive the experience will be. Accurate headphones with personalized spatial processing and head tracking will be necessary to get the best sound. 
無可選擇,應該也只能用耳機吧...





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