Abdominal Wall Blocks: The New Era (Part 5)

If you came here just for the video, here you go:

This was a prerecorded video played for this webinar. Its audio was however, distorted throughout from likely clipping. The version uploaded on YouTube had EQ work done to reduce the distortion; investing in denoising is enough expense. Reminder to everyone including myself whenever recording audio: always check the gain and avoid clipping!

Without this, you would definitely learn what clipping is.

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Abdominal Wall Blocks: The New Era (Part 4)

If you came here just for the video, here you go (please be patient with the audio, as it gets better in the middle):

Production notes below.

As I said earlier, the audio does get better in the middle, and this was the best that I could fix. A lot of stuff I could tell during editing the original footage given to me: > 1 mic streaming, air conditioning noise, use of noise gating were those I picked up. Without spending further on further audio plugins that would in theory fix some of the problems, I used what I had. I identified 6 segments of different recording settings and did a combination of denoising/high and low pass filtering/EQ’ing (this seemed to attenuate both double mic’ing and leftover noise)/compression (had to push the gain really high as the voice levels became very low trying to extract any good audio quality).

Heavy EQ’ing to remove wind noise “protected” by the noise gate and remove effect of 2 mics working simultaneously + the need to boost things back up after all of the attenuation

Also experimented with moving labels to keep up with moving objects during scanning; staying still scanning while talking isn’t easy. I won’t be using this technique ever, as it’s dizzying and distracting to follow the moving scan and the corresponding labels. Luckily there were spots where the speaker finished a sentence while scanning, allowing me to interject with freeze frames and have static labels, which is much easier to follow. I guess in the future any demos must keep this in mind if there’s a desire to label things in post: keep the probe still (as much as possible) when pointing things out, then shift only once finished to show other views.

I’m not sure if my Takstar SGC-598 or Boya BY-MM1 (with the dead cat) would be able to overcome the heavy wind noise there. Maybe a RODE NTG supercardioid? That RODE though, is much, much, much more expensive.

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Abdominal Wall Blocks: The New Era (Part 3)

This live demonstration by Dr Amiruddin for anterior approaches of abdominal wall blocks follows the previously shared video:

As usual, production notes follow.

Unfortunately, the auto-focus “homing missile cursor” was recorded along, which is impossible to eliminate. Another issue was that different & multiple recording methods were used, leading to audio issues. The early part was improved a bit with some playing with the EQ, but otherwise I was not keen on buying further software to try to fix the echoing that occurred. From the middle onwards the audio source gets better, but denoising was still made difficult and not worth it to be optimized the whole length of the tract; some areas get the wind noise (air conditioning) removed while in other parts the noise remains. I can’t spend time looking for each part where the audio seems to change and denoise it accordingly.

Hopefully the content more than makes up for any audio/creepy homing issues.

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