How to make collaborative playlists on Spotify and YouTube Music Spotify Any playlist on Spotify can be collaborative with a quick edit. Go to your library, and either select or create the playlist of your choice. I found this easiest to do on the mobile app, as the option to turn on collaboration is more prominent there, but it can be done on the desktop client as well. Once you’re in the playlist, click the ellipsis to bring up the editing options....

How to make drones sound less annoying Perception-influenced engineering By integrating human responses into the design process, the most undesirable noises can be avoided in the earliest stages of vehicle development. This can either be done directly with subjective testing (human participants assessing and providing feedback for a series of drone noise samples) or through the use of so-calledpsycho-acoustic metricswhich are widely adopted in the automotive industry. These metrics allow an accurate representation of how different sound features (pitch, temporal variations, tones) are perceived....

If you’re anything like me, you’ve probably wondered at some point if you’re spending too much money on coffee. Spoiler: you probably are. Upon realizing this myself a few years ago, I set upon a journey to learn to make my own coffee — the type of espresso-based drinks you tend to get at a hip coffee shop, in particular. Now I’m here to spread the love and help you get started on your own journey....

On February 6th, thePittsburgh Steelersand theGreen Bay Packerswill go head-to-head in Super Bowl XLV. As that timeless date approaches, buzz around these two competing teams grows (compared to mentions of our beloved Redskins, the Steelers and Packers are clearly no match). iStrategyLabs, one of our10 D.C. Startups You Need to Know About, decided to commemorate this time of year by producingFaceBowl.us, a Facebook Like + in-page chat mashup that let’s you vote on which team you want winning the big game....

What do you need to start a successful business? Common sense would say business smarts and of course the know-how to succeed in your industry. But what if you only have the former? The rise of serial entrepreneurship has brought about the era of the non-specialist entrepreneur. These entrepreneurs are generalists who specialize in starting, operating, and scaling businesses and not in the ins and outs of the industry they’re looking to disrupt....