Bluetooth audio

I'm about to pull the trigger on some way too expensive bluetooth headphones, and during my research I came across these two articles that are worth a read if you care about bluetooth audio:

• Wireless fidelity: making sense of Bluetooth headphone technology
• Force Mac OS X to use aptX with your bluetooth audio devices (download the linked application at your own risk, of course)

Headphones or earbuds that support the latest bluetooth audio options link the volume changes made on the headphones and computer/phone, will show a battery indicator on your iPhone, can do calls using reasonable audio quality (16 kHz, old ones use creaky phone quality at 8 kHz).

And last but not least, can accept AAC audio. With that, there's no difference in quality between wired and wireless playback of AAC-encoded music such as iTunes+ songs. Unfortunately, only a few headphones support AAC over bluetooth, and many don't bother to mention this on their website... (You can check on your Mac by alt/option-clicking the bluetooth icon in the menu bar.)

Permalink - posted 2016-02-13

Rammelende railvoertuigen raden

Dit zijn vier geluidsopnamen van trams die over de Loosduinseweg richting centrum rijden over de route van lijn 2 / 4 en daarbij de route van 12 over de Paul Krugerlaan - Regentesselaan kruisen. Dat geeft nogal wat gerammel, leek me dus aardig de verschillende trams waarmee de HTM rijdt te vergelijken:

• RegioCitadis: de Randstadrail-trams
• Avenio: de nieuwe brede trams die sinds kort op lijn 2 rijden
• GTL (Gelede Tram Lang), de rood/beige trams waarmee HTM sinds de jaren '80 rijdt

De opnames (één tram twee keer om het wat moeilijker te maken!):

• Tram 1:
• Tram 2:
• Tram 3:
• Tram 4:

Laat me via Twitter of het HaagsOVforum weten welke opname je denkt dat bij welke tram hoort...

Permalink - posted 2016-02-06

IPv6 celebrates its 20th birthday by reaching 10 percent deployment

My latest Ars Technica IPv6 story is about IPv6 celebrating its 20th birthday and that it has reached 10% deployment at the end of 2015.

And the US is doing very well with almost 25% IPv6 deployment:

Permalink - posted 2016-01-04 - 🇳🇱 Nederlandse versie