Strictly Come Dancing fans have complained that the launch show was marred by sound issues.

The pre-recorded debut attracted 9.3 million viewers and a peak of 10.1 million, a record audience for a Strictly launch show.

Claudia Winkleman and Tess Daly back on Strictly (BBC)

But viewers said that technical problems marred their enjoyment of the long-running BBC One show, this year featuring Daisy Lowe, Lesley Joseph, Ed Balls and Laura Whitmore competing for the glitterball trophy.

The comments come after BBC dramas Happy Valley, starring Sarah Lancashire, and Jamaica Inn were also plagued by sound problems.

Has anyone else got poor sound quality on BBC1 please or is my TV knackered?! #StrictlyComeDancing

— Jules Edwards (@Jules1315) September 3, 2016

The sound going out the first show in is embarrassing 🙃 #StrictlyComeDancing

— Emily Gould (@emilygould95) September 3, 2016

What's up with the sound? Thought it was one mic, then thought it was my TV but nope! #Strictly #StrictlyComeDancing #SCD #SCD2016

— George W.W (@GW_78) September 3, 2016

Anyone else got sound issues? Crackling and stuff? Is it live? #Strictly #SCD #StrictlyComeDancing

— Matthew Rimmer (@MatthewRimmer) September 3, 2016

Have they got the work experience kid doing the sound on Strictly tonight. It's appalling #StrictlyComeDancing

— meggystar (@meggystar1) September 3, 2016

What's happening to the sound on @bbcstrictly #StrictlyComeDancing

— Chris Newport (@ChrisNewport1) September 3, 2016

The BBC’s TV chief, Charlotte Moore, previously pledged to tackle problems with sound on the corporation’s shows.

“It is incredibly hard to get to the bottom of where things go wrong. It’s often several circumstances and it’s quite hard to isolate if there is one particular problem,” the director of BBC content has said.

Sarah Lancashire’s Happy Valley (BBC)

“It is often several different problems coming together. Sound is a very exact science.”

BBC One drama Jamaica Inn sparked more than 2,000 complaints about inaudible dialogue.

BBC director-general Tony Hall recently vowed to look into the sound problems experienced by viewers of Happy Valley after the second series of the BBC One show sparked hundreds of complaints from viewers over the “shocking” sound quality.