A:AnswerHi there,
The reason could be is that your Toshiba - TY-WSP70 Portable Bluetooth Speaker - Black has a low power, the speaker will produce a busy signal sound if its currently on a low power.
Gem
Toshiba Products
Please visit us at www.toshiba.com/support
A:AnswerYou can either add a bluetooth adapter to your laptop and pair it like you would to your phone, or it comes with a short aux cable that would run from your headphone jack to the back of the speaker.