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October 20 2014


When Uber and Airbnb Meet the Real World - NYTimes.com

  • On Thursday, the New York State attorney general said most Airbnb listings in the city violated zoning and other laws. Officials in California and Pennsylvania recently warned car services like Uber and Lyft that they might be unlawful. And workers’ rights advocates have questioned whether the people who provide these services should receive benefits, spurred by recent reports that some Homejoy house cleaners are homeless.


The Echo Nest Blog

  • The Echo Nest’s “energy” attribute, which is available for every song in our database, is computed by a combined analysis of many parts of the musical signal — the loudness, beats, structural changes and sounds of the instruments. This “energy” attribute results in a scaled floating point metric from 0 to 1, where 1 is the most energetic. From this analysis, popular music’s energy level started out around .3, and has now climbed to .7 — a big increase, and one that took decades.



Mixing Techniques for DJs: 5 Creative Tempo Changes | DJ TechTools

  • Have you ever wanted to mix in a greater variety of tempos into a set but were to afraid to screw up the mix?

Music Education: An In-depth Look at Beats Per Minute (BPM)

  • How does genre play into BPM? Again, it's all about feel, if you want an aggressive feel such as metal you'll most likely be playing a faster tempo with sixteenth notes as most types of hard rock and metal and lots of tempo changes are common in more technical subgenres of metal. (120-180 BPM)


    Hip Hop and rap are generally at a more moderate tempo as they give a "chill" or relaxed feeling with more sustained notes (100-120 BPM)


    Country music can fall anywhere between 60-140 BPM depending on the song/artist and what feeling they are trying to convey.

October 18 2014


特稿:香港珠海学院新闻系学生“占中”感言 - BBC Chinese

  • 每天沉迷上网、打机,不问世事,冷漠自私的香港年轻人,在这场运动中,偏偏在警方发射87 枚催泪弹,喷射胡椒喷雾和用警棍驱打和平示威人士,这个最艰难的时候,竟然抬起头来,重拾久违了的“豪情”,走上街头,支持被催泪弹和胡椒喷雾“封口”的示威者。

October 17 2014


朝鲜向联合国提交草案为人权辩护 - 新闻与分析 - FT中文网

  • “他们的态度转变似乎是他们整体努力的一部分,目的是不让金正恩(Kim Jong Un)被告上国际刑事法院,尽管中国和俄罗斯很可能会阻止安理会做出此类举动,”首尔朝鲜研究大学(University of North Korean Studies)教授杨武仁(Yang Moo-jin)表示。



How GoldieBlox Went From A Scrappy Kickstarter To Making Important Toys For Girls | Co.Exist | ideas + impact

  • But the hunt for a foreign factory didn't last long. Sterling's last job before GoldieBlox had been at a jewelry company, and the head of production there had spent decades in the toy industry prior to the jewelry job. As a result, Sterling was able to quickly get a lock on a factory in China that could do quality injection-molded plastic for the toys--and to ensure that it treated workers ethically. "That’s one of the hardest steps usually, finding that first factory," she says.


當代音樂產業13個最常見的謊言 - Inside 硬塞的網路趨勢觀察

  • Spotify 財政上因為沒有盈利而有幾百萬美金的空洞、音樂串流鼻祖 Rhapsody 已經在遣散員工了、 YouTube 早就提供免費的音樂資源好幾年了。

Chromaprint | AcoustID

  • Chromaprint is the core component of the AcoustID project. It's a client-side library that implements a custom algorithm for extracting fingerprints from any audio source. Overview of the fingerprint extraction process can be found in the blog post "How does Chromaprint work?".



Larry Summers explains why the world is too optimistic about China’s economic future – Quartz

  • using global historical trends, suggest China will grow an average of only 3.9% a year for the next two decades. And though it’s certainly possible China will defy historical trends, they argue that looming changes to its  authoritarian system increase the likelihood of an even sharper slowdown.

October 16 2014


10 Powerful Practices From 10 Highly Respected People

  • When a Virgin flight was delayed in San Francisco, the in-flight team took the drink cart out to the gate and offered complimentary drinks to passengers. Richard Branson picked up the phone and praised them for their creativity.

李悔之 | "你的中国你的党“——周小平的投名状 - 中国数字时代

  • 六十多年来,“你的党”虽然取得了无数宇宙级的辉煌成就,但人均寿命的提高,却与党的英明领导并没太大关系——上世纪五十年代前,不但中国人均寿命很低,世界亦如此。五十年代后,世界与中国之所以人均寿命普遍逐年增长,与英国细菌学家弗莱明、病理学家弗劳雷,以及德国生物化学家钱恩共同发明的青霉素造福人类有极大关系——青霉素的发明和普遍应用,结束了人类传染病几乎无法治疗的时代,使极大地危害人类生命的肺炎、肺结核、脑膜炎、心内膜炎、白喉、炭疽等病得到极大的有效治疗。之后,链霉素、氯霉素、土霉素、四环素等抗生素不断产生,更极大增强了人类治疗传染性疾病的能力,使人类平均寿命一再普遍增长。


  • 《中华人民共和国外国常驻新闻机构和外国记者采访条例》中指出要“促进国际交往和信息传播”,英国广播公司英文网站被屏蔽是否与此条例精神相悖?



October 15 2014


What's next for Spotify? Perhaps going 'beyond the Play button' | Technology | theguardian.com

  • the way we actually interact with music hasn’t changed that much. We play, skip and repeat songs and build our own playlists.
  • any song is just a few taps away
  • “This is really a UX [user experience] problem now. Just like people are not going to want to spend the same amount of money, they want to have different levels of interaction with music,” he said.


  • Lamere said that the digital music services of the future will add this data into an awareness of what a listener is doing and where they are – context. “It’s Tuesday morning, give me music for waking up or getting confident for a meeting, or it’s Friday night, give me music for bedtime, or hosting a sexy pool party, or programming with friends,” he said.



Rachel Chan

  • An infographic showing the popularity of each band relating to their genre. The circle size represents how popular each band is. The colour represents the genre.



The five types of music discovery | Technology | theguardian.com

  • An acceptable response for a keen music fan is to roll your eyes. You find new bands perfectly well yourself, thanks: you don’t need algorithms, apps or endless social networking alerts to do it for you.


  • Music from your friends


  • Music from the crowd


  • Music from curators


  • Music from algorithms


  • Music from serendipity



Web 2.0: Network Structure of Music Genres and their Stylistic Origins

  • A musical genre could be associated with more than one stylistic origin. For example, the stylistic origins of Hip Hop can be traced to Rhythm and blues, Reggae, Funk, Disco, Dancehall, Scat singing etc. Our graph takes in the musical genres and stylistic genres as nodes and the edges represent their relationships. Our data has 1058 nodes and 2767 edges. Let us go over to the graphs and results for various centrality measures. 


October 14 2014


Every Noise at Once

  • This is an ongoing attempt at an algorithmically-generated, readability-adjusted scatter-plot of the musical genre-space, based on data tracked and analyzed for 1287 genres by The Echo Nest. The calibration is fuzzy, but in general down is more organic, up is more mechanical and electric; left is denser and more atmospheric, right is spikier and bouncier.

Position sensor - Wikipedia, the free encyclopedia

  • A position sensor is any device that permits position measurement. It can either be an absolute position sensor or a relative one (displacement sensor). Position sensors can be linear, angular, or multi-axis.


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